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Finding the Fourth Proportional to 629,330.78, 868,498.80 and 357,391.10

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Solution

The fourth proportional to 629,330.78, 868,498.80 and 357,391.10 is: 493,212.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,330.78 : 868,498.80 = 357,391.10 : x
  2. Step 2: Convert to fraction form
    629,330.78/868,498.80 = 357,391.10/x
  3. Step 3: Cross multiply
    629,330.78x = 868,498.80 × 357,391.10
  4. Step 4: Simplify right side
    629,330.78x = 310,393,741,480.68
  5. Step 5: Solve for x
    x = 310,393,741,480.68/629,330.78
  6. Step 6: Final answer
    x = 493,212.40

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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.