Home / 861,836.22-1,189,543.32-499,201.38

Finding the Fourth Proportional to 861,836.22, 1,189,543.32 and 499,201.38

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Solution

The fourth proportional to 861,836.22, 1,189,543.32 and 499,201.38 is: 689,019.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,836.22 : 1,189,543.32 = 499,201.38 : x
  2. Step 2: Convert to fraction form
    861,836.22/1,189,543.32 = 499,201.38/x
  3. Step 3: Cross multiply
    861,836.22x = 1,189,543.32 × 499,201.38
  4. Step 4: Simplify right side
    861,836.22x = 593,821,666,913.78
  5. Step 5: Solve for x
    x = 593,821,666,913.78/861,836.22
  6. Step 6: Final answer
    x = 689,019.16

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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.