Home / 1,420,396.76-1,960,134.59-775,816.79

Finding the Fourth Proportional to 1,420,396.76, 1,960,134.59 and 775,816.79

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Solution

The fourth proportional to 1,420,396.76, 1,960,134.59 and 775,816.79 is: 1,070,620.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,420,396.76 : 1,960,134.59 = 775,816.79 : x
  2. Step 2: Convert to fraction form
    1,420,396.76/1,960,134.59 = 775,816.79/x
  3. Step 3: Cross multiply
    1,420,396.76x = 1,960,134.59 × 775,816.79
  4. Step 4: Simplify right side
    1,420,396.76x = 1,520,705,317,720.64
  5. Step 5: Solve for x
    x = 1,520,705,317,720.64/1,420,396.76
  6. Step 6: Final answer
    x = 1,070,620.10

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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.