Home / 915,731.60-1,262,253.19-721,824.89

Finding the Fourth Proportional to 915,731.60, 1,262,253.19 and 721,824.89

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Solution

The fourth proportional to 915,731.60, 1,262,253.19 and 721,824.89 is: 994,970.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    915,731.60 : 1,262,253.19 = 721,824.89 : x
  2. Step 2: Convert to fraction form
    915,731.60/1,262,253.19 = 721,824.89/x
  3. Step 3: Cross multiply
    915,731.60x = 1,262,253.19 × 721,824.89
  4. Step 4: Simplify right side
    915,731.60x = 911,125,766,414.78
  5. Step 5: Solve for x
    x = 911,125,766,414.78/915,731.60
  6. Step 6: Final answer
    x = 994,970.32

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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.