Home / 1,761,264.80-2,640,147.60-812,981.60

Finding the Fourth Proportional to 1,761,264.80, 2,640,147.60 and 812,981.60

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Solution

The fourth proportional to 1,761,264.80, 2,640,147.60 and 812,981.60 is: 1,218,664.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,761,264.80 : 2,640,147.60 = 812,981.60 : x
  2. Step 2: Convert to fraction form
    1,761,264.80/2,640,147.60 = 812,981.60/x
  3. Step 3: Cross multiply
    1,761,264.80x = 2,640,147.60 × 812,981.60
  4. Step 4: Simplify right side
    1,761,264.80x = 2,146,391,420,084.16
  5. Step 5: Solve for x
    x = 2,146,391,420,084.16/1,761,264.80
  6. Step 6: Final answer
    x = 1,218,664.80

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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.