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Finding the Fourth Proportional to 528,593.20, 791,269.80 and 291,209.20

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Solution

The fourth proportional to 528,593.20, 791,269.80 and 291,209.20 is: 435,921.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,593.20 : 791,269.80 = 291,209.20 : x
  2. Step 2: Convert to fraction form
    528,593.20/791,269.80 = 291,209.20/x
  3. Step 3: Cross multiply
    528,593.20x = 791,269.80 × 291,209.20
  4. Step 4: Simplify right side
    528,593.20x = 230,425,045,442.16
  5. Step 5: Solve for x
    x = 230,425,045,442.16/528,593.20
  6. Step 6: Final answer
    x = 435,921.32

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.