Home / 861,552.36-1,292,328.90-387,684.18

Finding the Fourth Proportional to 861,552.36, 1,292,328.90 and 387,684.18

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Solution

The fourth proportional to 861,552.36, 1,292,328.90 and 387,684.18 is: 581,526.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,552.36 : 1,292,328.90 = 387,684.18 : x
  2. Step 2: Convert to fraction form
    861,552.36/1,292,328.90 = 387,684.18/x
  3. Step 3: Cross multiply
    861,552.36x = 1,292,328.90 × 387,684.18
  4. Step 4: Simplify right side
    861,552.36x = 501,015,469,886.80
  5. Step 5: Solve for x
    x = 501,015,469,886.80/861,552.36
  6. Step 6: Final answer
    x = 581,526.43

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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.