Home / 865,981.20-1,299,176.60-275,005.20

Finding the Fourth Proportional to 865,981.20, 1,299,176.60 and 275,005.20

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Solution

The fourth proportional to 865,981.20, 1,299,176.60 and 275,005.20 is: 412,572.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    865,981.20 : 1,299,176.60 = 275,005.20 : x
  2. Step 2: Convert to fraction form
    865,981.20/1,299,176.60 = 275,005.20/x
  3. Step 3: Cross multiply
    865,981.20x = 1,299,176.60 × 275,005.20
  4. Step 4: Simplify right side
    865,981.20x = 357,280,320,718.32
  5. Step 5: Solve for x
    x = 357,280,320,718.32/865,981.20
  6. Step 6: Final answer
    x = 412,572.84

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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.