Home / 858,694.70-1,288,042.05-218,997.20

Finding the Fourth Proportional to 858,694.70, 1,288,042.05 and 218,997.20

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Solution

The fourth proportional to 858,694.70, 1,288,042.05 and 218,997.20 is: 328,495.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,694.70 : 1,288,042.05 = 218,997.20 : x
  2. Step 2: Convert to fraction form
    858,694.70/1,288,042.05 = 218,997.20/x
  3. Step 3: Cross multiply
    858,694.70x = 1,288,042.05 × 218,997.20
  4. Step 4: Simplify right side
    858,694.70x = 282,077,602,432.26
  5. Step 5: Solve for x
    x = 282,077,602,432.26/858,694.70
  6. Step 6: Final answer
    x = 328,495.80

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Similar ratio
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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.