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Finding the Fourth Proportional to 552,572.12, 762,487.72 and 310,849.69

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Solution

The fourth proportional to 552,572.12, 762,487.72 and 310,849.69 is: 428,937.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    552,572.12 : 762,487.72 = 310,849.69 : x
  2. Step 2: Convert to fraction form
    552,572.12/762,487.72 = 310,849.69/x
  3. Step 3: Cross multiply
    552,572.12x = 762,487.72 × 310,849.69
  4. Step 4: Simplify right side
    552,572.12x = 237,019,071,390.81
  5. Step 5: Solve for x
    x = 237,019,071,390.81/552,572.12
  6. Step 6: Final answer
    x = 428,937.80

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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.