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Finding the Fourth Proportional to 457,910.40, 686,865.60 and 125,486.40

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Solution

The fourth proportional to 457,910.40, 686,865.60 and 125,486.40 is: 188,229.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,910.40 : 686,865.60 = 125,486.40 : x
  2. Step 2: Convert to fraction form
    457,910.40/686,865.60 = 125,486.40/x
  3. Step 3: Cross multiply
    457,910.40x = 686,865.60 × 125,486.40
  4. Step 4: Simplify right side
    457,910.40x = 86,192,291,427.84
  5. Step 5: Solve for x
    x = 86,192,291,427.84/457,910.40
  6. Step 6: Final answer
    x = 188,229.60

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Similar ratio
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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.