Home / 1,278,563.40-1,917,845.10-802,672.20

Finding the Fourth Proportional to 1,278,563.40, 1,917,845.10 and 802,672.20

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Solution

The fourth proportional to 1,278,563.40, 1,917,845.10 and 802,672.20 is: 1,204,008.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,278,563.40 : 1,917,845.10 = 802,672.20 : x
  2. Step 2: Convert to fraction form
    1,278,563.40/1,917,845.10 = 802,672.20/x
  3. Step 3: Cross multiply
    1,278,563.40x = 1,917,845.10 × 802,672.20
  4. Step 4: Simplify right side
    1,278,563.40x = 1,539,400,945,676.22
  5. Step 5: Solve for x
    x = 1,539,400,945,676.22/1,278,563.40
  6. Step 6: Final answer
    x = 1,204,008.30

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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.