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Finding the Fourth Proportional to 527,507.98, 789,001.36 and 489,218.47

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Solution

The fourth proportional to 527,507.98, 789,001.36 and 489,218.47 is: 731,731.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    527,507.98 : 789,001.36 = 489,218.47 : x
  2. Step 2: Convert to fraction form
    527,507.98/789,001.36 = 489,218.47/x
  3. Step 3: Cross multiply
    527,507.98x = 789,001.36 × 489,218.47
  4. Step 4: Simplify right side
    527,507.98x = 385,994,034,971.57
  5. Step 5: Solve for x
    x = 385,994,034,971.57/527,507.98
  6. Step 6: Final answer
    x = 731,731.18

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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.