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Finding the Fourth Proportional to 720,404.01, 1,079,640.09 and 560,672.82

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Solution

The fourth proportional to 720,404.01, 1,079,640.09 and 560,672.82 is: 840,257.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    720,404.01 : 1,079,640.09 = 560,672.82 : x
  2. Step 2: Convert to fraction form
    720,404.01/1,079,640.09 = 560,672.82/x
  3. Step 3: Cross multiply
    720,404.01x = 1,079,640.09 × 560,672.82
  4. Step 4: Simplify right side
    720,404.01x = 605,324,853,845.35
  5. Step 5: Solve for x
    x = 605,324,853,845.35/720,404.01
  6. Step 6: Final answer
    x = 840,257.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.