Home / 814,142.68-1,122,218.76-641,779.56

Finding the Fourth Proportional to 814,142.68, 1,122,218.76 and 641,779.56

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Solution

The fourth proportional to 814,142.68, 1,122,218.76 and 641,779.56 is: 884,632.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    814,142.68 : 1,122,218.76 = 641,779.56 : x
  2. Step 2: Convert to fraction form
    814,142.68/1,122,218.76 = 641,779.56/x
  3. Step 3: Cross multiply
    814,142.68x = 1,122,218.76 × 641,779.56
  4. Step 4: Simplify right side
    814,142.68x = 720,217,062,016.55
  5. Step 5: Solve for x
    x = 720,217,062,016.55/814,142.68
  6. Step 6: Final answer
    x = 884,632.48

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.