Home / 769,628.80-1,155,998.40-743,190.40

Finding the Fourth Proportional to 769,628.80, 1,155,998.40 and 743,190.40

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Solution

The fourth proportional to 769,628.80, 1,155,998.40 and 743,190.40 is: 1,116,287.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    769,628.80 : 1,155,998.40 = 743,190.40 : x
  2. Step 2: Convert to fraction form
    769,628.80/1,155,998.40 = 743,190.40/x
  3. Step 3: Cross multiply
    769,628.80x = 1,155,998.40 × 743,190.40
  4. Step 4: Simplify right side
    769,628.80x = 859,126,913,295.36
  5. Step 5: Solve for x
    x = 859,126,913,295.36/769,628.80
  6. Step 6: Final answer
    x = 1,116,287.38

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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.