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Finding the Fourth Proportional to 496,872.80, 745,309.20 and 442,959.20

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Solution

The fourth proportional to 496,872.80, 745,309.20 and 442,959.20 is: 664,438.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    496,872.80 : 745,309.20 = 442,959.20 : x
  2. Step 2: Convert to fraction form
    496,872.80/745,309.20 = 442,959.20/x
  3. Step 3: Cross multiply
    496,872.80x = 745,309.20 × 442,959.20
  4. Step 4: Simplify right side
    496,872.80x = 330,141,566,984.64
  5. Step 5: Solve for x
    x = 330,141,566,984.64/496,872.80
  6. Step 6: Final answer
    x = 664,438.80

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Similar ratio
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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.