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Finding the Fourth Proportional to 625,627.20, 938,440.80 and 204,945.60

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Solution

The fourth proportional to 625,627.20, 938,440.80 and 204,945.60 is: 307,418.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,627.20 : 938,440.80 = 204,945.60 : x
  2. Step 2: Convert to fraction form
    625,627.20/938,440.80 = 204,945.60/x
  3. Step 3: Cross multiply
    625,627.20x = 938,440.80 × 204,945.60
  4. Step 4: Simplify right side
    625,627.20x = 192,329,312,820.48
  5. Step 5: Solve for x
    x = 192,329,312,820.48/625,627.20
  6. Step 6: Final answer
    x = 307,418.40

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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.