Home / 865,865.20-1,299,002.60-274,889.20

Finding the Fourth Proportional to 865,865.20, 1,299,002.60 and 274,889.20

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Solution

The fourth proportional to 865,865.20, 1,299,002.60 and 274,889.20 is: 412,398.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    865,865.20 : 1,299,002.60 = 274,889.20 : x
  2. Step 2: Convert to fraction form
    865,865.20/1,299,002.60 = 274,889.20/x
  3. Step 3: Cross multiply
    865,865.20x = 1,299,002.60 × 274,889.20
  4. Step 4: Simplify right side
    865,865.20x = 357,081,785,511.92
  5. Step 5: Solve for x
    x = 357,081,785,511.92/865,865.20
  6. Step 6: Final answer
    x = 412,398.82

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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.