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Finding the Fourth Proportional to 568,731.38, 784,853.15 and 310,601.79

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Solution

The fourth proportional to 568,731.38, 784,853.15 and 310,601.79 is: 428,632.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    568,731.38 : 784,853.15 = 310,601.79 : x
  2. Step 2: Convert to fraction form
    568,731.38/784,853.15 = 310,601.79/x
  3. Step 3: Cross multiply
    568,731.38x = 784,853.15 × 310,601.79
  4. Step 4: Simplify right side
    568,731.38x = 243,776,791,724.13
  5. Step 5: Solve for x
    x = 243,776,791,724.13/568,731.38
  6. Step 6: Final answer
    x = 428,632.57

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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.