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Finding the Fourth Proportional to 480,736.80, 721,105.20 and 404,629.20

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Solution

The fourth proportional to 480,736.80, 721,105.20 and 404,629.20 is: 606,943.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,736.80 : 721,105.20 = 404,629.20 : x
  2. Step 2: Convert to fraction form
    480,736.80/721,105.20 = 404,629.20/x
  3. Step 3: Cross multiply
    480,736.80x = 721,105.20 × 404,629.20
  4. Step 4: Simplify right side
    480,736.80x = 291,780,220,191.84
  5. Step 5: Solve for x
    x = 291,780,220,191.84/480,736.80
  6. Step 6: Final answer
    x = 606,943.80

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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.