Home / 819,449.20-1,229,346.60-345,890.80

Finding the Fourth Proportional to 819,449.20, 1,229,346.60 and 345,890.80

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Solution

The fourth proportional to 819,449.20, 1,229,346.60 and 345,890.80 is: 518,909.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,449.20 : 1,229,346.60 = 345,890.80 : x
  2. Step 2: Convert to fraction form
    819,449.20/1,229,346.60 = 345,890.80/x
  3. Step 3: Cross multiply
    819,449.20x = 1,229,346.60 × 345,890.80
  4. Step 4: Simplify right side
    819,449.20x = 425,219,678,951.28
  5. Step 5: Solve for x
    x = 425,219,678,951.28/819,449.20
  6. Step 6: Final answer
    x = 518,909.14

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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.