Home / 638,989.14-881,414.28-409,469.16

Finding the Fourth Proportional to 638,989.14, 881,414.28 and 409,469.16

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Solution

The fourth proportional to 638,989.14, 881,414.28 and 409,469.16 is: 564,817.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,989.14 : 881,414.28 = 409,469.16 : x
  2. Step 2: Convert to fraction form
    638,989.14/881,414.28 = 409,469.16/x
  3. Step 3: Cross multiply
    638,989.14x = 881,414.28 × 409,469.16
  4. Step 4: Simplify right side
    638,989.14x = 360,911,964,843.61
  5. Step 5: Solve for x
    x = 360,911,964,843.61/638,989.14
  6. Step 6: Final answer
    x = 564,817.06

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.