Home / 783,394,700.24-1,082,635,806.10-642,042,972.78

Finding the Fourth Proportional to 783,394,700.24, 1,082,635,806.10 and 642,042,972.78

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Solution

The fourth proportional to 783,394,700.24, 1,082,635,806.10 and 642,042,972.78 is: 887,290,546.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    783,394,700.24 : 1,082,635,806.10 = 642,042,972.78 : x
  2. Step 2: Convert to fraction form
    783,394,700.24/1,082,635,806.10 = 642,042,972.78/x
  3. Step 3: Cross multiply
    783,394,700.24x = 1,082,635,806.10 × 642,042,972.78
  4. Step 4: Simplify right side
    783,394,700.24x = 695,098,711,386,515,584
  5. Step 5: Solve for x
    x = 695,098,711,386,515,584/783,394,700.24
  6. Step 6: Final answer
    x = 887,290,546.10

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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.