Home / 1,278,352.50-1,917,791.18-379,714.20

Finding the Fourth Proportional to 1,278,352.50, 1,917,791.18 and 379,714.20

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Solution

The fourth proportional to 1,278,352.50, 1,917,791.18 and 379,714.20 is: 569,649.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,278,352.50 : 1,917,791.18 = 379,714.20 : x
  2. Step 2: Convert to fraction form
    1,278,352.50/1,917,791.18 = 379,714.20/x
  3. Step 3: Cross multiply
    1,278,352.50x = 1,917,791.18 × 379,714.20
  4. Step 4: Simplify right side
    1,278,352.50x = 728,212,543,680.76
  5. Step 5: Solve for x
    x = 728,212,543,680.76/1,278,352.50
  6. Step 6: Final answer
    x = 569,649.25

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Double scale
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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.