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Finding the Fourth Proportional to 490,665.60, 735,998.40 and 487,555.20

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Solution

The fourth proportional to 490,665.60, 735,998.40 and 487,555.20 is: 731,332.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,665.60 : 735,998.40 = 487,555.20 : x
  2. Step 2: Convert to fraction form
    490,665.60/735,998.40 = 487,555.20/x
  3. Step 3: Cross multiply
    490,665.60x = 735,998.40 × 487,555.20
  4. Step 4: Simplify right side
    490,665.60x = 358,839,847,111.68
  5. Step 5: Solve for x
    x = 358,839,847,111.68/490,665.60
  6. Step 6: Final answer
    x = 731,332.80

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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.