Home / 915,897.52-1,262,478.17-721,989.01

Finding the Fourth Proportional to 915,897.52, 1,262,478.17 and 721,989.01

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Solution

The fourth proportional to 915,897.52, 1,262,478.17 and 721,989.01 is: 995,193.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    915,897.52 : 1,262,478.17 = 721,989.01 : x
  2. Step 2: Convert to fraction form
    915,897.52/1,262,478.17 = 721,989.01/x
  3. Step 3: Cross multiply
    915,897.52x = 1,262,478.17 × 721,989.01
  4. Step 4: Simplify right side
    915,897.52x = 911,495,354,182.58
  5. Step 5: Solve for x
    x = 911,495,354,182.58/915,897.52
  6. Step 6: Final answer
    x = 995,193.61

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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.