Home / 721,068.54-1,081,520.19-188,640.96

Finding the Fourth Proportional to 721,068.54, 1,081,520.19 and 188,640.96

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Solution

The fourth proportional to 721,068.54, 1,081,520.19 and 188,640.96 is: 282,939.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,068.54 : 1,081,520.19 = 188,640.96 : x
  2. Step 2: Convert to fraction form
    721,068.54/1,081,520.19 = 188,640.96/x
  3. Step 3: Cross multiply
    721,068.54x = 1,081,520.19 × 188,640.96
  4. Step 4: Simplify right side
    721,068.54x = 204,019,006,900.98
  5. Step 5: Solve for x
    x = 204,019,006,900.98/721,068.54
  6. Step 6: Final answer
    x = 282,939.83

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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.