Home / 905,155.76-1,248,976.08-523,108.76

Finding the Fourth Proportional to 905,155.76, 1,248,976.08 and 523,108.76

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Solution

The fourth proportional to 905,155.76, 1,248,976.08 and 523,108.76 is: 721,809.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    905,155.76 : 1,248,976.08 = 523,108.76 : x
  2. Step 2: Convert to fraction form
    905,155.76/1,248,976.08 = 523,108.76/x
  3. Step 3: Cross multiply
    905,155.76x = 1,248,976.08 × 523,108.76
  4. Step 4: Simplify right side
    905,155.76x = 653,350,322,233.58
  5. Step 5: Solve for x
    x = 653,350,322,233.58/905,155.76
  6. Step 6: Final answer
    x = 721,809.83

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Double scale
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1.5x scale

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.