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Finding the Fourth Proportional to 552,579.92, 762,543.24 and 310,875.92

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Solution

The fourth proportional to 552,579.92, 762,543.24 and 310,875.92 is: 428,999.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    552,579.92 : 762,543.24 = 310,875.92 : x
  2. Step 2: Convert to fraction form
    552,579.92/762,543.24 = 310,875.92/x
  3. Step 3: Cross multiply
    552,579.92x = 762,543.24 × 310,875.92
  4. Step 4: Simplify right side
    552,579.92x = 237,056,331,274.78
  5. Step 5: Solve for x
    x = 237,056,331,274.78/552,579.92
  6. Step 6: Final answer
    x = 428,999.18

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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.