Home / 727,466,767.81-1,003,904,542.39-392,939,288.73

Finding the Fourth Proportional to 727,466,767.81, 1,003,904,542.39 and 392,939,288.73

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Solution

The fourth proportional to 727,466,767.81, 1,003,904,542.39 and 392,939,288.73 is: 542,256,436.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    727,466,767.81 : 1,003,904,542.39 = 392,939,288.73 : x
  2. Step 2: Convert to fraction form
    727,466,767.81/1,003,904,542.39 = 392,939,288.73/x
  3. Step 3: Cross multiply
    727,466,767.81x = 1,003,904,542.39 × 392,939,288.73
  4. Step 4: Simplify right side
    727,466,767.81x = 394,473,536,838,560,448
  5. Step 5: Solve for x
    x = 394,473,536,838,560,448/727,466,767.81
  6. Step 6: Final answer
    x = 542,256,436.03

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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.