Home / 1,661,876.80-2,489,128.80-664,091.20

Finding the Fourth Proportional to 1,661,876.80, 2,489,128.80 and 664,091.20

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Solution

The fourth proportional to 1,661,876.80, 2,489,128.80 and 664,091.20 is: 994,663.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,661,876.80 : 2,489,128.80 = 664,091.20 : x
  2. Step 2: Convert to fraction form
    1,661,876.80/2,489,128.80 = 664,091.20/x
  3. Step 3: Cross multiply
    1,661,876.80x = 2,489,128.80 × 664,091.20
  4. Step 4: Simplify right side
    1,661,876.80x = 1,653,008,531,746.56
  5. Step 5: Solve for x
    x = 1,653,008,531,746.56/1,661,876.80
  6. Step 6: Final answer
    x = 994,663.70

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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.