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Finding the Fourth Proportional to 490,817.60, 736,233.20 and 323,409.60

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Solution

The fourth proportional to 490,817.60, 736,233.20 and 323,409.60 is: 485,118.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,817.60 : 736,233.20 = 323,409.60 : x
  2. Step 2: Convert to fraction form
    490,817.60/736,233.20 = 323,409.60/x
  3. Step 3: Cross multiply
    490,817.60x = 736,233.20 × 323,409.60
  4. Step 4: Simplify right side
    490,817.60x = 238,104,884,718.72
  5. Step 5: Solve for x
    x = 238,104,884,718.72/490,817.60
  6. Step 6: Final answer
    x = 485,118.88

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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.