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Finding the Fourth Proportional to 622,147.70, 932,270.85 and 418,992.60

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Solution

The fourth proportional to 622,147.70, 932,270.85 and 418,992.60 is: 627,848.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    622,147.70 : 932,270.85 = 418,992.60 : x
  2. Step 2: Convert to fraction form
    622,147.70/932,270.85 = 418,992.60/x
  3. Step 3: Cross multiply
    622,147.70x = 932,270.85 × 418,992.60
  4. Step 4: Simplify right side
    622,147.70x = 390,614,587,345.71
  5. Step 5: Solve for x
    x = 390,614,587,345.71/622,147.70
  6. Step 6: Final answer
    x = 627,848.65

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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.