Home / 457,438.20-686,546.10-368,791.80

Finding the Fourth Proportional to 457,438.20, 686,546.10 and 368,791.80

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Solution

The fourth proportional to 457,438.20, 686,546.10 and 368,791.80 is: 553,501.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,438.20 : 686,546.10 = 368,791.80 : x
  2. Step 2: Convert to fraction form
    457,438.20/686,546.10 = 368,791.80/x
  3. Step 3: Cross multiply
    457,438.20x = 686,546.10 × 368,791.80
  4. Step 4: Simplify right side
    457,438.20x = 253,192,572,001.98
  5. Step 5: Solve for x
    x = 253,192,572,001.98/457,438.20
  6. Step 6: Final answer
    x = 553,501.15

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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.