Home / 1,440,435,163.26-1,987,774,613.82-813,890,139.10

Finding the Fourth Proportional to 1,440,435,163.26, 1,987,774,613.82 and 813,890,139.10

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Solution

The fourth proportional to 1,440,435,163.26, 1,987,774,613.82 and 813,890,139.10 is: 1,123,153,751.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,440,435,163.26 : 1,987,774,613.82 = 813,890,139.10 : x
  2. Step 2: Convert to fraction form
    1,440,435,163.26/1,987,774,613.82 = 813,890,139.10/x
  3. Step 3: Cross multiply
    1,440,435,163.26x = 1,987,774,613.82 × 813,890,139.10
  4. Step 4: Simplify right side
    1,440,435,163.26x = 1,617,830,156,941,408,512
  5. Step 5: Solve for x
    x = 1,617,830,156,941,408,512/1,440,435,163.26
  6. Step 6: Final answer
    x = 1,123,153,751.18

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Double scale
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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.