Home / 769,891.60-1,153,087.80-486,456.40

Finding the Fourth Proportional to 769,891.60, 1,153,087.80 and 486,456.40

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Solution

The fourth proportional to 769,891.60, 1,153,087.80 and 486,456.40 is: 728,579.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    769,891.60 : 1,153,087.80 = 486,456.40 : x
  2. Step 2: Convert to fraction form
    769,891.60/1,153,087.80 = 486,456.40/x
  3. Step 3: Cross multiply
    769,891.60x = 1,153,087.80 × 486,456.40
  4. Step 4: Simplify right side
    769,891.60x = 560,926,940,071.92
  5. Step 5: Solve for x
    x = 560,926,940,071.92/769,891.60
  6. Step 6: Final answer
    x = 728,579.11

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.