Home / 861,638.50-1,292,457.75-230,535.91

Finding the Fourth Proportional to 861,638.50, 1,292,457.75 and 230,535.91

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Solution

The fourth proportional to 861,638.50, 1,292,457.75 and 230,535.91 is: 345,803.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,638.50 : 1,292,457.75 = 230,535.91 : x
  2. Step 2: Convert to fraction form
    861,638.50/1,292,457.75 = 230,535.91/x
  3. Step 3: Cross multiply
    861,638.50x = 1,292,457.75 × 230,535.91
  4. Step 4: Simplify right side
    861,638.50x = 297,957,923,532.80
  5. Step 5: Solve for x
    x = 297,957,923,532.80/861,638.50
  6. Step 6: Final answer
    x = 345,803.87

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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.