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Finding the Fourth Proportional to 568,340.38, 784,253.85 and 313,675.15

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Solution

The fourth proportional to 568,340.38, 784,253.85 and 313,675.15 is: 432,840.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    568,340.38 : 784,253.85 = 313,675.15 : x
  2. Step 2: Convert to fraction form
    568,340.38/784,253.85 = 313,675.15/x
  3. Step 3: Cross multiply
    568,340.38x = 784,253.85 × 313,675.15
  4. Step 4: Simplify right side
    568,340.38x = 246,000,944,036.83
  5. Step 5: Solve for x
    x = 246,000,944,036.83/568,340.38
  6. Step 6: Final answer
    x = 432,840.87

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Double scale
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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.