Home / 865,982.20-1,299,178.10-275,006.20

Finding the Fourth Proportional to 865,982.20, 1,299,178.10 and 275,006.20

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Solution

The fourth proportional to 865,982.20, 1,299,178.10 and 275,006.20 is: 412,574.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    865,982.20 : 1,299,178.10 = 275,006.20 : x
  2. Step 2: Convert to fraction form
    865,982.20/1,299,178.10 = 275,006.20/x
  3. Step 3: Cross multiply
    865,982.20x = 1,299,178.10 × 275,006.20
  4. Step 4: Simplify right side
    865,982.20x = 357,282,032,404.22
  5. Step 5: Solve for x
    x = 357,282,032,404.22/865,982.20
  6. Step 6: Final answer
    x = 412,574.34

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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.