Home / 827,142.20-1,240,943.70-406,431.80

Finding the Fourth Proportional to 827,142.20, 1,240,943.70 and 406,431.80

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Solution

The fourth proportional to 827,142.20, 1,240,943.70 and 406,431.80 is: 609,760.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    827,142.20 : 1,240,943.70 = 406,431.80 : x
  2. Step 2: Convert to fraction form
    827,142.20/1,240,943.70 = 406,431.80/x
  3. Step 3: Cross multiply
    827,142.20x = 1,240,943.70 × 406,431.80
  4. Step 4: Simplify right side
    827,142.20x = 504,358,981,689.66
  5. Step 5: Solve for x
    x = 504,358,981,689.66/827,142.20
  6. Step 6: Final answer
    x = 609,760.91

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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.