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Finding the Fourth Proportional to 528,897.12, 729,697.78 and 338,020.62

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Solution

The fourth proportional to 528,897.12, 729,697.78 and 338,020.62 is: 466,353.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,897.12 : 729,697.78 = 338,020.62 : x
  2. Step 2: Convert to fraction form
    528,897.12/729,697.78 = 338,020.62/x
  3. Step 3: Cross multiply
    528,897.12x = 729,697.78 × 338,020.62
  4. Step 4: Simplify right side
    528,897.12x = 246,652,891,514.68
  5. Step 5: Solve for x
    x = 246,652,891,514.68/528,897.12
  6. Step 6: Final answer
    x = 466,353.26

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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.