Home / 1,420,675.20-1,960,076.88-1,012,843.44

Finding the Fourth Proportional to 1,420,675.20, 1,960,076.88 and 1,012,843.44

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Solution

The fourth proportional to 1,420,675.20, 1,960,076.88 and 1,012,843.44 is: 1,397,399.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,420,675.20 : 1,960,076.88 = 1,012,843.44 : x
  2. Step 2: Convert to fraction form
    1,420,675.20/1,960,076.88 = 1,012,843.44/x
  3. Step 3: Cross multiply
    1,420,675.20x = 1,960,076.88 × 1,012,843.44
  4. Step 4: Simplify right side
    1,420,675.20x = 1,985,251,009,803.67
  5. Step 5: Solve for x
    x = 1,985,251,009,803.67/1,420,675.20
  6. Step 6: Final answer
    x = 1,397,399.64

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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.