Home / 861,081.12-1,291,622.76-411,696.36

Finding the Fourth Proportional to 861,081.12, 1,291,622.76 and 411,696.36

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Solution

The fourth proportional to 861,081.12, 1,291,622.76 and 411,696.36 is: 617,545.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,081.12 : 1,291,622.76 = 411,696.36 : x
  2. Step 2: Convert to fraction form
    861,081.12/1,291,622.76 = 411,696.36/x
  3. Step 3: Cross multiply
    861,081.12x = 1,291,622.76 × 411,696.36
  4. Step 4: Simplify right side
    861,081.12x = 531,756,388,785.15
  5. Step 5: Solve for x
    x = 531,756,388,785.15/861,081.12
  6. Step 6: Final answer
    x = 617,545.06

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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.