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Finding the Fourth Proportional to 715,545.43, 987,464.21 and 409,620.58

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Solution

The fourth proportional to 715,545.43, 987,464.21 and 409,620.58 is: 565,282.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    715,545.43 : 987,464.21 = 409,620.58 : x
  2. Step 2: Convert to fraction form
    715,545.43/987,464.21 = 409,620.58/x
  3. Step 3: Cross multiply
    715,545.43x = 987,464.21 × 409,620.58
  4. Step 4: Simplify right side
    715,545.43x = 404,485,655,444.02
  5. Step 5: Solve for x
    x = 404,485,655,444.02/715,545.43
  6. Step 6: Final answer
    x = 565,282.99

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.