Home / 827,218.20-1,240,827.30-661,330.20

Finding the Fourth Proportional to 827,218.20, 1,240,827.30 and 661,330.20

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Solution

The fourth proportional to 827,218.20, 1,240,827.30 and 661,330.20 is: 991,995.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    827,218.20 : 1,240,827.30 = 661,330.20 : x
  2. Step 2: Convert to fraction form
    827,218.20/1,240,827.30 = 661,330.20/x
  3. Step 3: Cross multiply
    827,218.20x = 1,240,827.30 × 661,330.20
  4. Step 4: Simplify right side
    827,218.20x = 820,596,566,474.46
  5. Step 5: Solve for x
    x = 820,596,566,474.46/827,218.20
  6. Step 6: Final answer
    x = 991,995.30

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Double scale
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Similar ratio
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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.