Home / 1,420,470-1,960,236.99-775,890.36

Finding the Fourth Proportional to 1,420,470, 1,960,236.99 and 775,890.36

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Solution

The fourth proportional to 1,420,470, 1,960,236.99 and 775,890.36 is: 1,070,722.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,420,470 : 1,960,236.99 = 775,890.36 : x
  2. Step 2: Convert to fraction form
    1,420,470/1,960,236.99 = 775,890.36/x
  3. Step 3: Cross multiply
    1,420,470x = 1,960,236.99 × 775,890.36
  4. Step 4: Simplify right side
    1,420,470x = 1,520,928,983,856.42
  5. Step 5: Solve for x
    x = 1,520,928,983,856.42/1,420,470
  6. Step 6: Final answer
    x = 1,070,722.36

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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.