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Finding the Fourth Proportional to 497,717.44, 686,770.20 and 279,925.48

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Solution

The fourth proportional to 497,717.44, 686,770.20 and 279,925.48 is: 386,252.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    497,717.44 : 686,770.20 = 279,925.48 : x
  2. Step 2: Convert to fraction form
    497,717.44/686,770.20 = 279,925.48/x
  3. Step 3: Cross multiply
    497,717.44x = 686,770.20 × 279,925.48
  4. Step 4: Simplify right side
    497,717.44x = 192,244,477,884.70
  5. Step 5: Solve for x
    x = 192,244,477,884.70/497,717.44
  6. Step 6: Final answer
    x = 386,252.24

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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.