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Finding the Fourth Proportional to 543,713.40, 815,570.10 and 494,724.60

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Solution

The fourth proportional to 543,713.40, 815,570.10 and 494,724.60 is: 742,086.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,713.40 : 815,570.10 = 494,724.60 : x
  2. Step 2: Convert to fraction form
    543,713.40/815,570.10 = 494,724.60/x
  3. Step 3: Cross multiply
    543,713.40x = 815,570.10 × 494,724.60
  4. Step 4: Simplify right side
    543,713.40x = 403,482,591,494.46
  5. Step 5: Solve for x
    x = 403,482,591,494.46/543,713.40
  6. Step 6: Final answer
    x = 742,086.90

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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.