Home / 851,704.35-1,278,048.60-319,279.20

Finding the Fourth Proportional to 851,704.35, 1,278,048.60 and 319,279.20

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Solution

The fourth proportional to 851,704.35, 1,278,048.60 and 319,279.20 is: 479,103.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    851,704.35 : 1,278,048.60 = 319,279.20 : x
  2. Step 2: Convert to fraction form
    851,704.35/1,278,048.60 = 319,279.20/x
  3. Step 3: Cross multiply
    851,704.35x = 1,278,048.60 × 319,279.20
  4. Step 4: Simplify right side
    851,704.35x = 408,054,334,569.12
  5. Step 5: Solve for x
    x = 408,054,334,569.12/851,704.35
  6. Step 6: Final answer
    x = 479,103.26

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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.