Home / 915,869.76-1,262,440.39-721,961.45

Finding the Fourth Proportional to 915,869.76, 1,262,440.39 and 721,961.45

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Solution

The fourth proportional to 915,869.76, 1,262,440.39 and 721,961.45 is: 995,156.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    915,869.76 : 1,262,440.39 = 721,961.45 : x
  2. Step 2: Convert to fraction form
    915,869.76/1,262,440.39 = 721,961.45/x
  3. Step 3: Cross multiply
    915,869.76x = 1,262,440.39 × 721,961.45
  4. Step 4: Simplify right side
    915,869.76x = 911,433,294,502.97
  5. Step 5: Solve for x
    x = 911,433,294,502.97/915,869.76
  6. Step 6: Final answer
    x = 995,156.01

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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.