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Finding the Fourth Proportional to 492,431.40, 738,209.70 and 324,032.40

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Solution

The fourth proportional to 492,431.40, 738,209.70 and 324,032.40 is: 485,760.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,431.40 : 738,209.70 = 324,032.40 : x
  2. Step 2: Convert to fraction form
    492,431.40/738,209.70 = 324,032.40/x
  3. Step 3: Cross multiply
    492,431.40x = 738,209.70 × 324,032.40
  4. Step 4: Simplify right side
    492,431.40x = 239,203,860,794.28
  5. Step 5: Solve for x
    x = 239,203,860,794.28/492,431.40
  6. Step 6: Final answer
    x = 485,760.78

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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.