Home / 1,278,759.40-1,919,175.90-1,237,287.40

Finding the Fourth Proportional to 1,278,759.40, 1,919,175.90 and 1,237,287.40

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Solution

The fourth proportional to 1,278,759.40, 1,919,175.90 and 1,237,287.40 is: 1,856,934.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,278,759.40 : 1,919,175.90 = 1,237,287.40 : x
  2. Step 2: Convert to fraction form
    1,278,759.40/1,919,175.90 = 1,237,287.40/x
  3. Step 3: Cross multiply
    1,278,759.40x = 1,919,175.90 × 1,237,287.40
  4. Step 4: Simplify right side
    1,278,759.40x = 2,374,572,159,453.66
  5. Step 5: Solve for x
    x = 2,374,572,159,453.66/1,278,759.40
  6. Step 6: Final answer
    x = 1,856,934.28

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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.