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Finding the Fourth Proportional to 539,080.86, 807,992.49 and 405,531.72

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Solution

The fourth proportional to 539,080.86, 807,992.49 and 405,531.72 is: 607,824.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,080.86 : 807,992.49 = 405,531.72 : x
  2. Step 2: Convert to fraction form
    539,080.86/807,992.49 = 405,531.72/x
  3. Step 3: Cross multiply
    539,080.86x = 807,992.49 × 405,531.72
  4. Step 4: Simplify right side
    539,080.86x = 327,666,584,216.78
  5. Step 5: Solve for x
    x = 327,666,584,216.78/539,080.86
  6. Step 6: Final answer
    x = 607,824.56

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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.