Home / 658,909.20-987,234.39-442,362.36

Finding the Fourth Proportional to 658,909.20, 987,234.39 and 442,362.36

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Solution

The fourth proportional to 658,909.20, 987,234.39 and 442,362.36 is: 662,785.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,909.20 : 987,234.39 = 442,362.36 : x
  2. Step 2: Convert to fraction form
    658,909.20/987,234.39 = 442,362.36/x
  3. Step 3: Cross multiply
    658,909.20x = 987,234.39 × 442,362.36
  4. Step 4: Simplify right side
    658,909.20x = 436,715,334,633.56
  5. Step 5: Solve for x
    x = 436,715,334,633.56/658,909.20
  6. Step 6: Final answer
    x = 662,785.30

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1.5x scale

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.