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Finding the Fourth Proportional to 661,073.92, 912,256.32 and 359,261.44

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Solution

The fourth proportional to 661,073.92, 912,256.32 and 359,261.44 is: 495,766.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,073.92 : 912,256.32 = 359,261.44 : x
  2. Step 2: Convert to fraction form
    661,073.92/912,256.32 = 359,261.44/x
  3. Step 3: Cross multiply
    661,073.92x = 912,256.32 × 359,261.44
  4. Step 4: Simplify right side
    661,073.92x = 327,738,519,172.30
  5. Step 5: Solve for x
    x = 327,738,519,172.30/661,073.92
  6. Step 6: Final answer
    x = 495,766.83

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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.