Home / 457,507.20-686,530.40-191,247.20

Finding the Fourth Proportional to 457,507.20, 686,530.40 and 191,247.20

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Solution

The fourth proportional to 457,507.20, 686,530.40 and 191,247.20 is: 286,983.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,507.20 : 686,530.40 = 191,247.20 : x
  2. Step 2: Convert to fraction form
    457,507.20/686,530.40 = 191,247.20/x
  3. Step 3: Cross multiply
    457,507.20x = 686,530.40 × 191,247.20
  4. Step 4: Simplify right side
    457,507.20x = 131,297,016,714.88
  5. Step 5: Solve for x
    x = 131,297,016,714.88/457,507.20
  6. Step 6: Final answer
    x = 286,983.50

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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.