Home / 457,561.13-686,442.20-187,690.86

Finding the Fourth Proportional to 457,561.13, 686,442.20 and 187,690.86

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Solution

The fourth proportional to 457,561.13, 686,442.20 and 187,690.86 is: 281,577.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,561.13 : 686,442.20 = 187,690.86 : x
  2. Step 2: Convert to fraction form
    457,561.13/686,442.20 = 187,690.86/x
  3. Step 3: Cross multiply
    457,561.13x = 686,442.20 × 187,690.86
  4. Step 4: Simplify right side
    457,561.13x = 128,838,925,919.84
  5. Step 5: Solve for x
    x = 128,838,925,919.84/457,561.13
  6. Step 6: Final answer
    x = 281,577.52

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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.