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Finding the Fourth Proportional to 492,310.40, 740,007.04 and 324,906.40

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Solution

The fourth proportional to 492,310.40, 740,007.04 and 324,906.40 is: 488,376.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,310.40 : 740,007.04 = 324,906.40 : x
  2. Step 2: Convert to fraction form
    492,310.40/740,007.04 = 324,906.40/x
  3. Step 3: Cross multiply
    492,310.40x = 740,007.04 × 324,906.40
  4. Step 4: Simplify right side
    492,310.40x = 240,433,023,341.06
  5. Step 5: Solve for x
    x = 240,433,023,341.06/492,310.40
  6. Step 6: Final answer
    x = 488,376.89

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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.