Home / 819,872.46-1,230,182.34-420,793.47

Finding the Fourth Proportional to 819,872.46, 1,230,182.34 and 420,793.47

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Solution

The fourth proportional to 819,872.46, 1,230,182.34 and 420,793.47 is: 631,381.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,872.46 : 1,230,182.34 = 420,793.47 : x
  2. Step 2: Convert to fraction form
    819,872.46/1,230,182.34 = 420,793.47/x
  3. Step 3: Cross multiply
    819,872.46x = 1,230,182.34 × 420,793.47
  4. Step 4: Simplify right side
    819,872.46x = 517,652,695,581.32
  5. Step 5: Solve for x
    x = 517,652,695,581.32/819,872.46
  6. Step 6: Final answer
    x = 631,381.98

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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.