Home / 859,931.20-1,289,896.80-220,233.70

Finding the Fourth Proportional to 859,931.20, 1,289,896.80 and 220,233.70

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Solution

The fourth proportional to 859,931.20, 1,289,896.80 and 220,233.70 is: 330,350.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    859,931.20 : 1,289,896.80 = 220,233.70 : x
  2. Step 2: Convert to fraction form
    859,931.20/1,289,896.80 = 220,233.70/x
  3. Step 3: Cross multiply
    859,931.20x = 1,289,896.80 × 220,233.70
  4. Step 4: Simplify right side
    859,931.20x = 284,078,744,882.16
  5. Step 5: Solve for x
    x = 284,078,744,882.16/859,931.20
  6. Step 6: Final answer
    x = 330,350.55

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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.