Home / 1,420,354.12-1,960,131.56-775,809.04

Finding the Fourth Proportional to 1,420,354.12, 1,960,131.56 and 775,809.04

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Solution

The fourth proportional to 1,420,354.12, 1,960,131.56 and 775,809.04 is: 1,070,639.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,420,354.12 : 1,960,131.56 = 775,809.04 : x
  2. Step 2: Convert to fraction form
    1,420,354.12/1,960,131.56 = 775,809.04/x
  3. Step 3: Cross multiply
    1,420,354.12x = 1,960,131.56 × 775,809.04
  4. Step 4: Simplify right side
    1,420,354.12x = 1,520,687,783,837.30
  5. Step 5: Solve for x
    x = 1,520,687,783,837.30/1,420,354.12
  6. Step 6: Final answer
    x = 1,070,639.89

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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.