Home / 861,182.28-1,188,415.80-479,205.72

Finding the Fourth Proportional to 861,182.28, 1,188,415.80 and 479,205.72

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Solution

The fourth proportional to 861,182.28, 1,188,415.80 and 479,205.72 is: 661,295.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,182.28 : 1,188,415.80 = 479,205.72 : x
  2. Step 2: Convert to fraction form
    861,182.28/1,188,415.80 = 479,205.72/x
  3. Step 3: Cross multiply
    861,182.28x = 1,188,415.80 × 479,205.72
  4. Step 4: Simplify right side
    861,182.28x = 569,495,649,098.38
  5. Step 5: Solve for x
    x = 569,495,649,098.38/861,182.28
  6. Step 6: Final answer
    x = 661,295.13

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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.