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Finding the Fourth Proportional to 457,534.40, 686,301.60 and 368,960.90

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Solution

The fourth proportional to 457,534.40, 686,301.60 and 368,960.90 is: 553,441.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,534.40 : 686,301.60 = 368,960.90 : x
  2. Step 2: Convert to fraction form
    457,534.40/686,301.60 = 368,960.90/x
  3. Step 3: Cross multiply
    457,534.40x = 686,301.60 × 368,960.90
  4. Step 4: Simplify right side
    457,534.40x = 253,218,456,007.44
  5. Step 5: Solve for x
    x = 253,218,456,007.44/457,534.40
  6. Step 6: Final answer
    x = 553,441.35

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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.