Home / 723,139.20-1,085,227.20-407,260.80

Finding the Fourth Proportional to 723,139.20, 1,085,227.20 and 407,260.80

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Solution

The fourth proportional to 723,139.20, 1,085,227.20 and 407,260.80 is: 611,183.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    723,139.20 : 1,085,227.20 = 407,260.80 : x
  2. Step 2: Convert to fraction form
    723,139.20/1,085,227.20 = 407,260.80/x
  3. Step 3: Cross multiply
    723,139.20x = 1,085,227.20 × 407,260.80
  4. Step 4: Simplify right side
    723,139.20x = 441,970,497,653.76
  5. Step 5: Solve for x
    x = 441,970,497,653.76/723,139.20
  6. Step 6: Final answer
    x = 611,183.15

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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.