Home / 880,007.20-1,320,010.80-318,968.80

Finding the Fourth Proportional to 880,007.20, 1,320,010.80 and 318,968.80

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Solution

The fourth proportional to 880,007.20, 1,320,010.80 and 318,968.80 is: 478,453.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    880,007.20 : 1,320,010.80 = 318,968.80 : x
  2. Step 2: Convert to fraction form
    880,007.20/1,320,010.80 = 318,968.80/x
  3. Step 3: Cross multiply
    880,007.20x = 1,320,010.80 × 318,968.80
  4. Step 4: Simplify right side
    880,007.20x = 421,042,260,863.04
  5. Step 5: Solve for x
    x = 421,042,260,863.04/880,007.20
  6. Step 6: Final answer
    x = 478,453.20

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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.