Home / 861,311.14-1,188,584.55-479,329.72

Finding the Fourth Proportional to 861,311.14, 1,188,584.55 and 479,329.72

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Solution

The fourth proportional to 861,311.14, 1,188,584.55 and 479,329.72 is: 661,461.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,311.14 : 1,188,584.55 = 479,329.72 : x
  2. Step 2: Convert to fraction form
    861,311.14/1,188,584.55 = 479,329.72/x
  3. Step 3: Cross multiply
    861,311.14x = 1,188,584.55 × 479,329.72
  4. Step 4: Simplify right side
    861,311.14x = 569,723,896,576.37
  5. Step 5: Solve for x
    x = 569,723,896,576.37/861,311.14
  6. Step 6: Final answer
    x = 661,461.20

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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.