Home / 693,147.38-1,039,839.30-309,035.61

Finding the Fourth Proportional to 693,147.38, 1,039,839.30 and 309,035.61

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Solution

The fourth proportional to 693,147.38, 1,039,839.30 and 309,035.61 is: 463,606.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,147.38 : 1,039,839.30 = 309,035.61 : x
  2. Step 2: Convert to fraction form
    693,147.38/1,039,839.30 = 309,035.61/x
  3. Step 3: Cross multiply
    693,147.38x = 1,039,839.30 × 309,035.61
  4. Step 4: Simplify right side
    693,147.38x = 321,347,372,377.47
  5. Step 5: Solve for x
    x = 321,347,372,377.47/693,147.38
  6. Step 6: Final answer
    x = 463,606.13

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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.