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Finding the Fourth Proportional to 488,908.60, 732,488.10 and 418,924.60

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Solution

The fourth proportional to 488,908.60, 732,488.10 and 418,924.60 is: 627,637.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,908.60 : 732,488.10 = 418,924.60 : x
  2. Step 2: Convert to fraction form
    488,908.60/732,488.10 = 418,924.60/x
  3. Step 3: Cross multiply
    488,908.60x = 732,488.10 × 418,924.60
  4. Step 4: Simplify right side
    488,908.60x = 306,857,284,297.26
  5. Step 5: Solve for x
    x = 306,857,284,297.26/488,908.60
  6. Step 6: Final answer
    x = 627,637.32

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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.