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Finding the Fourth Proportional to 713,691.01, 984,907.02 and 391,381.84

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Solution

The fourth proportional to 713,691.01, 984,907.02 and 391,381.84 is: 540,114.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,691.01 : 984,907.02 = 391,381.84 : x
  2. Step 2: Convert to fraction form
    713,691.01/984,907.02 = 391,381.84/x
  3. Step 3: Cross multiply
    713,691.01x = 984,907.02 × 391,381.84
  4. Step 4: Simplify right side
    713,691.01x = 385,474,721,716.52
  5. Step 5: Solve for x
    x = 385,474,721,716.52/713,691.01
  6. Step 6: Final answer
    x = 540,114.30

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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.