Home / 861,649.55-1,188,302.30-539,389.03

Finding the Fourth Proportional to 861,649.55, 1,188,302.30 and 539,389.03

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Solution

The fourth proportional to 861,649.55, 1,188,302.30 and 539,389.03 is: 743,872.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,649.55 : 1,188,302.30 = 539,389.03 : x
  2. Step 2: Convert to fraction form
    861,649.55/1,188,302.30 = 539,389.03/x
  3. Step 3: Cross multiply
    861,649.55x = 1,188,302.30 × 539,389.03
  4. Step 4: Simplify right side
    861,649.55x = 640,957,224,943.77
  5. Step 5: Solve for x
    x = 640,957,224,943.77/861,649.55
  6. Step 6: Final answer
    x = 743,872.29

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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.