Home / 457,958.10-686,937.15-209,126.10

Finding the Fourth Proportional to 457,958.10, 686,937.15 and 209,126.10

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Solution

The fourth proportional to 457,958.10, 686,937.15 and 209,126.10 is: 313,689.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,958.10 : 686,937.15 = 209,126.10 : x
  2. Step 2: Convert to fraction form
    457,958.10/686,937.15 = 209,126.10/x
  3. Step 3: Cross multiply
    457,958.10x = 686,937.15 × 209,126.10
  4. Step 4: Simplify right side
    457,958.10x = 143,656,487,124.62
  5. Step 5: Solve for x
    x = 143,656,487,124.62/457,958.10
  6. Step 6: Final answer
    x = 313,689.15

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Similar ratio
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1.5x scale

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.