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Finding the Fourth Proportional to 661,170.20, 912,414.78 and 359,364.20

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Solution

The fourth proportional to 661,170.20, 912,414.78 and 359,364.20 is: 495,922.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,170.20 : 912,414.78 = 359,364.20 : x
  2. Step 2: Convert to fraction form
    661,170.20/912,414.78 = 359,364.20/x
  3. Step 3: Cross multiply
    661,170.20x = 912,414.78 × 359,364.20
  4. Step 4: Simplify right side
    661,170.20x = 327,889,202,920.80
  5. Step 5: Solve for x
    x = 327,889,202,920.80/661,170.20
  6. Step 6: Final answer
    x = 495,922.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.