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Finding the Fourth Proportional to 425,693,658.30, 638,866,403.13 and 192,688,001.30

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Solution

The fourth proportional to 425,693,658.30, 638,866,403.13 and 192,688,001.30 is: 289,179,525.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,693,658.30 : 638,866,403.13 = 192,688,001.30 : x
  2. Step 2: Convert to fraction form
    425,693,658.30/638,866,403.13 = 192,688,001.30/x
  3. Step 3: Cross multiply
    425,693,658.30x = 638,866,403.13 × 192,688,001.30
  4. Step 4: Simplify right side
    425,693,658.30x = 123,101,890,316,839,776
  5. Step 5: Solve for x
    x = 123,101,890,316,839,776/425,693,658.30
  6. Step 6: Final answer
    x = 289,179,525.97

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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.