Home / 1,420,700.20-1,960,111.38-1,012,868.44

Finding the Fourth Proportional to 1,420,700.20, 1,960,111.38 and 1,012,868.44

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Solution

The fourth proportional to 1,420,700.20, 1,960,111.38 and 1,012,868.44 is: 1,397,434.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,420,700.20 : 1,960,111.38 = 1,012,868.44 : x
  2. Step 2: Convert to fraction form
    1,420,700.20/1,960,111.38 = 1,012,868.44/x
  3. Step 3: Cross multiply
    1,420,700.20x = 1,960,111.38 × 1,012,868.44
  4. Step 4: Simplify right side
    1,420,700.20x = 1,985,334,955,686.85
  5. Step 5: Solve for x
    x = 1,985,334,955,686.85/1,420,700.20
  6. Step 6: Final answer
    x = 1,397,434.14

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1.5x scale

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.