Home / 674,453.40-1,012,178.99-319,468.20

Finding the Fourth Proportional to 674,453.40, 1,012,178.99 and 319,468.20

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Solution

The fourth proportional to 674,453.40, 1,012,178.99 and 319,468.20 is: 479,438.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    674,453.40 : 1,012,178.99 = 319,468.20 : x
  2. Step 2: Convert to fraction form
    674,453.40/1,012,178.99 = 319,468.20/x
  3. Step 3: Cross multiply
    674,453.40x = 1,012,178.99 × 319,468.20
  4. Step 4: Simplify right side
    674,453.40x = 323,359,000,013.12
  5. Step 5: Solve for x
    x = 323,359,000,013.12/674,453.40
  6. Step 6: Final answer
    x = 479,438.61

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Double scale
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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.