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Finding the Fourth Proportional to 625,728.76, 863,452.54 and 353,758.91

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Solution

The fourth proportional to 625,728.76, 863,452.54 and 353,758.91 is: 488,157.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,728.76 : 863,452.54 = 353,758.91 : x
  2. Step 2: Convert to fraction form
    625,728.76/863,452.54 = 353,758.91/x
  3. Step 3: Cross multiply
    625,728.76x = 863,452.54 × 353,758.91
  4. Step 4: Simplify right side
    625,728.76x = 305,454,025,512.07
  5. Step 5: Solve for x
    x = 305,454,025,512.07/625,728.76
  6. Step 6: Final answer
    x = 488,157.24

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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.