Home / 787,128.19-1,180,776.66-218,511.70

Finding the Fourth Proportional to 787,128.19, 1,180,776.66 and 218,511.70

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Solution

The fourth proportional to 787,128.19, 1,180,776.66 and 218,511.70 is: 327,790.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    787,128.19 : 1,180,776.66 = 218,511.70 : x
  2. Step 2: Convert to fraction form
    787,128.19/1,180,776.66 = 218,511.70/x
  3. Step 3: Cross multiply
    787,128.19x = 1,180,776.66 × 218,511.70
  4. Step 4: Simplify right side
    787,128.19x = 258,013,515,296.92
  5. Step 5: Solve for x
    x = 258,013,515,296.92/787,128.19
  6. Step 6: Final answer
    x = 327,790.97

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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.