Home / 639,205.20-958,151.70-372,828.60

Finding the Fourth Proportional to 639,205.20, 958,151.70 and 372,828.60

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Solution

The fourth proportional to 639,205.20, 958,151.70 and 372,828.60 is: 558,860.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,205.20 : 958,151.70 = 372,828.60 : x
  2. Step 2: Convert to fraction form
    639,205.20/958,151.70 = 372,828.60/x
  3. Step 3: Cross multiply
    639,205.20x = 958,151.70 × 372,828.60
  4. Step 4: Simplify right side
    639,205.20x = 357,226,356,898.62
  5. Step 5: Solve for x
    x = 357,226,356,898.62/639,205.20
  6. Step 6: Final answer
    x = 558,860.22

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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.