Home / 1,761,220.80-2,640,081.60-812,937.60

Finding the Fourth Proportional to 1,761,220.80, 2,640,081.60 and 812,937.60

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Solution

The fourth proportional to 1,761,220.80, 2,640,081.60 and 812,937.60 is: 1,218,598.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,761,220.80 : 2,640,081.60 = 812,937.60 : x
  2. Step 2: Convert to fraction form
    1,761,220.80/2,640,081.60 = 812,937.60/x
  3. Step 3: Cross multiply
    1,761,220.80x = 2,640,081.60 × 812,937.60
  4. Step 4: Simplify right side
    1,761,220.80x = 2,146,221,599,708.16
  5. Step 5: Solve for x
    x = 2,146,221,599,708.16/1,761,220.80
  6. Step 6: Final answer
    x = 1,218,598.83

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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.