Home / 457,815.34-686,493.24-217,857.70

Finding the Fourth Proportional to 457,815.34, 686,493.24 and 217,857.70

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Solution

The fourth proportional to 457,815.34, 686,493.24 and 217,857.70 is: 326,677.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,815.34 : 686,493.24 = 217,857.70 : x
  2. Step 2: Convert to fraction form
    457,815.34/686,493.24 = 217,857.70/x
  3. Step 3: Cross multiply
    457,815.34x = 686,493.24 × 217,857.70
  4. Step 4: Simplify right side
    457,815.34x = 149,557,838,331.95
  5. Step 5: Solve for x
    x = 149,557,838,331.95/457,815.34
  6. Step 6: Final answer
    x = 326,677.21

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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.