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Finding the Fourth Proportional to 552,309.60, 762,209.16 and 310,590.96

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Solution

The fourth proportional to 552,309.60, 762,209.16 and 310,590.96 is: 428,627.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    552,309.60 : 762,209.16 = 310,590.96 : x
  2. Step 2: Convert to fraction form
    552,309.60/762,209.16 = 310,590.96/x
  3. Step 3: Cross multiply
    552,309.60x = 762,209.16 × 310,590.96
  4. Step 4: Simplify right side
    552,309.60x = 236,735,274,725.19
  5. Step 5: Solve for x
    x = 236,735,274,725.19/552,309.60
  6. Step 6: Final answer
    x = 428,627.85

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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.