Home / 1,451,640.80-2,177,461.20-1,428,021.20

Finding the Fourth Proportional to 1,451,640.80, 2,177,461.20 and 1,428,021.20

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Solution

The fourth proportional to 1,451,640.80, 2,177,461.20 and 1,428,021.20 is: 2,142,031.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,451,640.80 : 2,177,461.20 = 1,428,021.20 : x
  2. Step 2: Convert to fraction form
    1,451,640.80/2,177,461.20 = 1,428,021.20/x
  3. Step 3: Cross multiply
    1,451,640.80x = 2,177,461.20 × 1,428,021.20
  4. Step 4: Simplify right side
    1,451,640.80x = 3,109,460,755,777.44
  5. Step 5: Solve for x
    x = 3,109,460,755,777.44/1,451,640.80
  6. Step 6: Final answer
    x = 2,142,031.80

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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.