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Finding the Fourth Proportional to 707,330.12, 976,115.66 and 385,042.62

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Solution

The fourth proportional to 707,330.12, 976,115.66 and 385,042.62 is: 531,358.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    707,330.12 : 976,115.66 = 385,042.62 : x
  2. Step 2: Convert to fraction form
    707,330.12/976,115.66 = 385,042.62/x
  3. Step 3: Cross multiply
    707,330.12x = 976,115.66 × 385,042.62
  4. Step 4: Simplify right side
    707,330.12x = 375,846,131,149.43
  5. Step 5: Solve for x
    x = 375,846,131,149.43/707,330.12
  6. Step 6: Final answer
    x = 531,358.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.