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Finding the Fourth Proportional to 483,724.80, 725,587.20 and 440,179.20

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Solution

The fourth proportional to 483,724.80, 725,587.20 and 440,179.20 is: 660,268.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    483,724.80 : 725,587.20 = 440,179.20 : x
  2. Step 2: Convert to fraction form
    483,724.80/725,587.20 = 440,179.20/x
  3. Step 3: Cross multiply
    483,724.80x = 725,587.20 × 440,179.20
  4. Step 4: Simplify right side
    483,724.80x = 319,388,393,226.24
  5. Step 5: Solve for x
    x = 319,388,393,226.24/483,724.80
  6. Step 6: Final answer
    x = 660,268.80

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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.