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Finding the Fourth Proportional to 498,412.20, 747,618.30 and 309,455.40

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Solution

The fourth proportional to 498,412.20, 747,618.30 and 309,455.40 is: 464,183.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,412.20 : 747,618.30 = 309,455.40 : x
  2. Step 2: Convert to fraction form
    498,412.20/747,618.30 = 309,455.40/x
  3. Step 3: Cross multiply
    498,412.20x = 747,618.30 × 309,455.40
  4. Step 4: Simplify right side
    498,412.20x = 231,354,520,073.82
  5. Step 5: Solve for x
    x = 231,354,520,073.82/498,412.20
  6. Step 6: Final answer
    x = 464,183.10

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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.