Home / 490,724.80-736,087.20-439,403.20

Finding the Fourth Proportional to 490,724.80, 736,087.20 and 439,403.20

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Solution

The fourth proportional to 490,724.80, 736,087.20 and 439,403.20 is: 659,104.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,724.80 : 736,087.20 = 439,403.20 : x
  2. Step 2: Convert to fraction form
    490,724.80/736,087.20 = 439,403.20/x
  3. Step 3: Cross multiply
    490,724.80x = 736,087.20 × 439,403.20
  4. Step 4: Simplify right side
    490,724.80x = 323,439,071,159.04
  5. Step 5: Solve for x
    x = 323,439,071,159.04/490,724.80
  6. Step 6: Final answer
    x = 659,104.80

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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.