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Finding the Fourth Proportional to 492,742.40, 739,405.20 and 324,748.40

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Solution

The fourth proportional to 492,742.40, 739,405.20 and 324,748.40 is: 487,314.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,742.40 : 739,405.20 = 324,748.40 : x
  2. Step 2: Convert to fraction form
    492,742.40/739,405.20 = 324,748.40/x
  3. Step 3: Cross multiply
    492,742.40x = 739,405.20 × 324,748.40
  4. Step 4: Simplify right side
    492,742.40x = 240,120,655,651.68
  5. Step 5: Solve for x
    x = 240,120,655,651.68/492,742.40
  6. Step 6: Final answer
    x = 487,314.78

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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.