Home / 1,278,110.40-1,917,165.60-379,690.80

Finding the Fourth Proportional to 1,278,110.40, 1,917,165.60 and 379,690.80

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Solution

The fourth proportional to 1,278,110.40, 1,917,165.60 and 379,690.80 is: 569,536.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,278,110.40 : 1,917,165.60 = 379,690.80 : x
  2. Step 2: Convert to fraction form
    1,278,110.40/1,917,165.60 = 379,690.80/x
  3. Step 3: Cross multiply
    1,278,110.40x = 1,917,165.60 × 379,690.80
  4. Step 4: Simplify right side
    1,278,110.40x = 727,930,140,396.48
  5. Step 5: Solve for x
    x = 727,930,140,396.48/1,278,110.40
  6. Step 6: Final answer
    x = 569,536.20

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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.