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Finding the Fourth Proportional to 526,728.69, 790,115.54 and 206,949.78

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Solution

The fourth proportional to 526,728.69, 790,115.54 and 206,949.78 is: 310,433.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    526,728.69 : 790,115.54 = 206,949.78 : x
  2. Step 2: Convert to fraction form
    526,728.69/790,115.54 = 206,949.78/x
  3. Step 3: Cross multiply
    526,728.69x = 790,115.54 × 206,949.78
  4. Step 4: Simplify right side
    526,728.69x = 163,514,236,142.83
  5. Step 5: Solve for x
    x = 163,514,236,142.83/526,728.69
  6. Step 6: Final answer
    x = 310,433.51

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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.