Home / 861,258.91-1,291,019.91-541,639.19

Finding the Fourth Proportional to 861,258.91, 1,291,019.91 and 541,639.19

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Solution

The fourth proportional to 861,258.91, 1,291,019.91 and 541,639.19 is: 811,912.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,258.91 : 1,291,019.91 = 541,639.19 : x
  2. Step 2: Convert to fraction form
    861,258.91/1,291,019.91 = 541,639.19/x
  3. Step 3: Cross multiply
    861,258.91x = 1,291,019.91 × 541,639.19
  4. Step 4: Simplify right side
    861,258.91x = 699,266,978,326.27
  5. Step 5: Solve for x
    x = 699,266,978,326.27/861,258.91
  6. Step 6: Final answer
    x = 811,912.62

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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.