Home / 1,440,435,217.74-1,987,774,688.58-813,890,193.72

Finding the Fourth Proportional to 1,440,435,217.74, 1,987,774,688.58 and 813,890,193.72

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Solution

The fourth proportional to 1,440,435,217.74, 1,987,774,688.58 and 813,890,193.72 is: 1,123,153,826.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,440,435,217.74 : 1,987,774,688.58 = 813,890,193.72 : x
  2. Step 2: Convert to fraction form
    1,440,435,217.74/1,987,774,688.58 = 813,890,193.72/x
  3. Step 3: Cross multiply
    1,440,435,217.74x = 1,987,774,688.58 × 813,890,193.72
  4. Step 4: Simplify right side
    1,440,435,217.74x = 1,617,830,326,360,088,832
  5. Step 5: Solve for x
    x = 1,617,830,326,360,088,832/1,440,435,217.74
  6. Step 6: Final answer
    x = 1,123,153,826.31

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Half scale
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Double scale
Find fourth proportional to 1,440,435,218.74, 1,987,774,689.96 and 813,890,194.72
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.