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Finding the Fourth Proportional to 568,606.61, 784,680.92 and 310,485.35

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Solution

The fourth proportional to 568,606.61, 784,680.92 and 310,485.35 is: 428,471.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    568,606.61 : 784,680.92 = 310,485.35 : x
  2. Step 2: Convert to fraction form
    568,606.61/784,680.92 = 310,485.35/x
  3. Step 3: Cross multiply
    568,606.61x = 784,680.92 × 310,485.35
  4. Step 4: Simplify right side
    568,606.61x = 243,631,930,084.52
  5. Step 5: Solve for x
    x = 243,631,930,084.52/568,606.61
  6. Step 6: Final answer
    x = 428,471.86

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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.