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Finding the Fourth Proportional to 487,674, 730,846.80 and 274,543.56

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Solution

The fourth proportional to 487,674, 730,846.80 and 274,543.56 is: 411,441.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,674 : 730,846.80 = 274,543.56 : x
  2. Step 2: Convert to fraction form
    487,674/730,846.80 = 274,543.56/x
  3. Step 3: Cross multiply
    487,674x = 730,846.80 × 274,543.56
  4. Step 4: Simplify right side
    487,674x = 200,649,282,286.61
  5. Step 5: Solve for x
    x = 200,649,282,286.61/487,674
  6. Step 6: Final answer
    x = 411,441.42

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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.