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Finding the Fourth Proportional to 715,560.66, 987,452.91 and 409,626.72

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Solution

The fourth proportional to 715,560.66, 987,452.91 and 409,626.72 is: 565,272.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    715,560.66 : 987,452.91 = 409,626.72 : x
  2. Step 2: Convert to fraction form
    715,560.66/987,452.91 = 409,626.72/x
  3. Step 3: Cross multiply
    715,560.66x = 987,452.91 × 409,626.72
  4. Step 4: Simplify right side
    715,560.66x = 404,487,096,677.76
  5. Step 5: Solve for x
    x = 404,487,096,677.76/715,560.66
  6. Step 6: Final answer
    x = 565,272.97

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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.