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Finding the Fourth Proportional to 488,386.20, 732,579.30 and 409,654.20

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Solution

The fourth proportional to 488,386.20, 732,579.30 and 409,654.20 is: 614,481.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,386.20 : 732,579.30 = 409,654.20 : x
  2. Step 2: Convert to fraction form
    488,386.20/732,579.30 = 409,654.20/x
  3. Step 3: Cross multiply
    488,386.20x = 732,579.30 × 409,654.20
  4. Step 4: Simplify right side
    488,386.20x = 300,104,187,078.06
  5. Step 5: Solve for x
    x = 300,104,187,078.06/488,386.20
  6. Step 6: Final answer
    x = 614,481.30

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Double scale
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Similar ratio
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1.5x scale

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.