Home / 639,553.10-958,245.70-386,301.52

Finding the Fourth Proportional to 639,553.10, 958,245.70 and 386,301.52

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Solution

The fourth proportional to 639,553.10, 958,245.70 and 386,301.52 is: 578,797.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,553.10 : 958,245.70 = 386,301.52 : x
  2. Step 2: Convert to fraction form
    639,553.10/958,245.70 = 386,301.52/x
  3. Step 3: Cross multiply
    639,553.10x = 958,245.70 × 386,301.52
  4. Step 4: Simplify right side
    639,553.10x = 370,171,770,443.46
  5. Step 5: Solve for x
    x = 370,171,770,443.46/639,553.10
  6. Step 6: Final answer
    x = 578,797.55

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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.