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Finding the Fourth Proportional to 886,825.40, 1,330,238.10 and 512,655.80

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Solution

The fourth proportional to 886,825.40, 1,330,238.10 and 512,655.80 is: 768,983.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    886,825.40 : 1,330,238.10 = 512,655.80 : x
  2. Step 2: Convert to fraction form
    886,825.40/1,330,238.10 = 512,655.80/x
  3. Step 3: Cross multiply
    886,825.40x = 1,330,238.10 × 512,655.80
  4. Step 4: Simplify right side
    886,825.40x = 681,954,277,345.98
  5. Step 5: Solve for x
    x = 681,954,277,345.98/886,825.40
  6. Step 6: Final answer
    x = 768,983.70

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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.