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Finding the Fourth Proportional to 539,881.98, 810,314.10 and 287,374.74

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Solution

The fourth proportional to 539,881.98, 810,314.10 and 287,374.74 is: 431,323.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,881.98 : 810,314.10 = 287,374.74 : x
  2. Step 2: Convert to fraction form
    539,881.98/810,314.10 = 287,374.74/x
  3. Step 3: Cross multiply
    539,881.98x = 810,314.10 × 287,374.74
  4. Step 4: Simplify right side
    539,881.98x = 232,863,803,805.83
  5. Step 5: Solve for x
    x = 232,863,803,805.83/539,881.98
  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.