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Finding the Fourth Proportional to 625,345.20, 938,455.20 and 401,250.60

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Solution

The fourth proportional to 625,345.20, 938,455.20 and 401,250.60 is: 602,156.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,345.20 : 938,455.20 = 401,250.60 : x
  2. Step 2: Convert to fraction form
    625,345.20/938,455.20 = 401,250.60/x
  3. Step 3: Cross multiply
    625,345.20x = 938,455.20 × 401,250.60
  4. Step 4: Simplify right side
    625,345.20x = 376,555,712,073.12
  5. Step 5: Solve for x
    x = 376,555,712,073.12/625,345.20
  6. Step 6: Final answer
    x = 602,156.56

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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.