Home / 1,420,701.20-1,960,112.76-1,012,869.44

Finding the Fourth Proportional to 1,420,701.20, 1,960,112.76 and 1,012,869.44

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Solution

The fourth proportional to 1,420,701.20, 1,960,112.76 and 1,012,869.44 is: 1,397,435.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,420,701.20 : 1,960,112.76 = 1,012,869.44 : x
  2. Step 2: Convert to fraction form
    1,420,701.20/1,960,112.76 = 1,012,869.44/x
  3. Step 3: Cross multiply
    1,420,701.20x = 1,960,112.76 × 1,012,869.44
  4. Step 4: Simplify right side
    1,420,701.20x = 1,985,338,313,558.05
  5. Step 5: Solve for x
    x = 1,985,338,313,558.05/1,420,701.20
  6. Step 6: Final answer
    x = 1,397,435.52

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.