Home / 458,028.30-686,714.40-191,651.70

Finding the Fourth Proportional to 458,028.30, 686,714.40 and 191,651.70

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Solution

The fourth proportional to 458,028.30, 686,714.40 and 191,651.70 is: 287,340.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,028.30 : 686,714.40 = 191,651.70 : x
  2. Step 2: Convert to fraction form
    458,028.30/686,714.40 = 191,651.70/x
  3. Step 3: Cross multiply
    458,028.30x = 686,714.40 × 191,651.70
  4. Step 4: Simplify right side
    458,028.30x = 131,609,982,174.48
  5. Step 5: Solve for x
    x = 131,609,982,174.48/458,028.30
  6. Step 6: Final answer
    x = 287,340.28

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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.