Home / 1,280,215,503.30-1,919,366,661.15-698,606,472.90

Finding the Fourth Proportional to 1,280,215,503.30, 1,919,366,661.15 and 698,606,472.90

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Solution

The fourth proportional to 1,280,215,503.30, 1,919,366,661.15 and 698,606,472.90 is: 1,047,387,701.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,280,215,503.30 : 1,919,366,661.15 = 698,606,472.90 : x
  2. Step 2: Convert to fraction form
    1,280,215,503.30/1,919,366,661.15 = 698,606,472.90/x
  3. Step 3: Cross multiply
    1,280,215,503.30x = 1,919,366,661.15 × 698,606,472.90
  4. Step 4: Simplify right side
    1,280,215,503.30x = 1,340,881,973,347,851,008
  5. Step 5: Solve for x
    x = 1,340,881,973,347,851,008/1,280,215,503.30
  6. Step 6: Final answer
    x = 1,047,387,701.44

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.