Home / 812,724.16-1,219,200.24-339,301.84

Finding the Fourth Proportional to 812,724.16, 1,219,200.24 and 339,301.84

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Solution

The fourth proportional to 812,724.16, 1,219,200.24 and 339,301.84 is: 509,000.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,724.16 : 1,219,200.24 = 339,301.84 : x
  2. Step 2: Convert to fraction form
    812,724.16/1,219,200.24 = 339,301.84/x
  3. Step 3: Cross multiply
    812,724.16x = 1,219,200.24 × 339,301.84
  4. Step 4: Simplify right side
    812,724.16x = 413,676,884,760.44
  5. Step 5: Solve for x
    x = 413,676,884,760.44/812,724.16
  6. Step 6: Final answer
    x = 509,000.35

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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.