Home / 664,488.20-996,732.30-309,538.10

Finding the Fourth Proportional to 664,488.20, 996,732.30 and 309,538.10

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Solution

The fourth proportional to 664,488.20, 996,732.30 and 309,538.10 is: 464,307.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,488.20 : 996,732.30 = 309,538.10 : x
  2. Step 2: Convert to fraction form
    664,488.20/996,732.30 = 309,538.10/x
  3. Step 3: Cross multiply
    664,488.20x = 996,732.30 × 309,538.10
  4. Step 4: Simplify right side
    664,488.20x = 308,526,622,350.63
  5. Step 5: Solve for x
    x = 308,526,622,350.63/664,488.20
  6. Step 6: Final answer
    x = 464,307.15

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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.