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Finding the Fourth Proportional to 555,239,940.80, 766,231,190.88 and 307,737,273.92

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Solution

The fourth proportional to 555,239,940.80, 766,231,190.88 and 307,737,273.92 is: 424,677,478.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,239,940.80 : 766,231,190.88 = 307,737,273.92 : x
  2. Step 2: Convert to fraction form
    555,239,940.80/766,231,190.88 = 307,737,273.92/x
  3. Step 3: Cross multiply
    555,239,940.80x = 766,231,190.88 × 307,737,273.92
  4. Step 4: Simplify right side
    555,239,940.80x = 235,797,897,873,886,368
  5. Step 5: Solve for x
    x = 235,797,897,873,886,368/555,239,940.80
  6. Step 6: Final answer
    x = 424,677,478.23

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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.