Home / 820,069.20-1,230,334.20-399,358.80

Finding the Fourth Proportional to 820,069.20, 1,230,334.20 and 399,358.80

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Solution

The fourth proportional to 820,069.20, 1,230,334.20 and 399,358.80 is: 599,150.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,069.20 : 1,230,334.20 = 399,358.80 : x
  2. Step 2: Convert to fraction form
    820,069.20/1,230,334.20 = 399,358.80/x
  3. Step 3: Cross multiply
    820,069.20x = 1,230,334.20 × 399,358.80
  4. Step 4: Simplify right side
    820,069.20x = 491,344,789,710.96
  5. Step 5: Solve for x
    x = 491,344,789,710.96/820,069.20
  6. Step 6: Final answer
    x = 599,150.40

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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.