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Finding the Fourth Proportional to 528,614.20, 791,301.30 and 291,230.20

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Solution

The fourth proportional to 528,614.20, 791,301.30 and 291,230.20 is: 435,952.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,614.20 : 791,301.30 = 291,230.20 : x
  2. Step 2: Convert to fraction form
    528,614.20/791,301.30 = 291,230.20/x
  3. Step 3: Cross multiply
    528,614.20x = 791,301.30 × 291,230.20
  4. Step 4: Simplify right side
    528,614.20x = 230,450,835,859.26
  5. Step 5: Solve for x
    x = 230,450,835,859.26/528,614.20
  6. Step 6: Final answer
    x = 435,952.79

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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.