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Finding the Fourth Proportional to 488,640.60, 732,086.10 and 418,656.60

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Solution

The fourth proportional to 488,640.60, 732,086.10 and 418,656.60 is: 627,235.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,640.60 : 732,086.10 = 418,656.60 : x
  2. Step 2: Convert to fraction form
    488,640.60/732,086.10 = 418,656.60/x
  3. Step 3: Cross multiply
    488,640.60x = 732,086.10 × 418,656.60
  4. Step 4: Simplify right side
    488,640.60x = 306,492,677,533.26
  5. Step 5: Solve for x
    x = 306,492,677,533.26/488,640.60
  6. Step 6: Final answer
    x = 627,235.39

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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.