Home / 664,498.20-996,747.30-309,548.10

Finding the Fourth Proportional to 664,498.20, 996,747.30 and 309,548.10

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Solution

The fourth proportional to 664,498.20, 996,747.30 and 309,548.10 is: 464,322.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,498.20 : 996,747.30 = 309,548.10 : x
  2. Step 2: Convert to fraction form
    664,498.20/996,747.30 = 309,548.10/x
  3. Step 3: Cross multiply
    664,498.20x = 996,747.30 × 309,548.10
  4. Step 4: Simplify right side
    664,498.20x = 308,541,232,895.13
  5. Step 5: Solve for x
    x = 308,541,232,895.13/664,498.20
  6. Step 6: Final answer
    x = 464,322.15

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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.