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Finding the Fourth Proportional to 539,881.96, 810,314.46 and 287,374.60

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Solution

The fourth proportional to 539,881.96, 810,314.46 and 287,374.60 is: 431,323.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,881.96 : 810,314.46 = 287,374.60 : x
  2. Step 2: Convert to fraction form
    539,881.96/810,314.46 = 287,374.60/x
  3. Step 3: Cross multiply
    539,881.96x = 810,314.46 × 287,374.60
  4. Step 4: Simplify right side
    539,881.96x = 232,863,793,816.72
  5. Step 5: Solve for x
    x = 232,863,793,816.72/539,881.96
  6. Step 6: Final answer
    x = 431,323.53

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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.