Home / 777,951.20-1,165,371.60-445,138.40

Finding the Fourth Proportional to 777,951.20, 1,165,371.60 and 445,138.40

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Solution

The fourth proportional to 777,951.20, 1,165,371.60 and 445,138.40 is: 666,817.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    777,951.20 : 1,165,371.60 = 445,138.40 : x
  2. Step 2: Convert to fraction form
    777,951.20/1,165,371.60 = 445,138.40/x
  3. Step 3: Cross multiply
    777,951.20x = 1,165,371.60 × 445,138.40
  4. Step 4: Simplify right side
    777,951.20x = 518,751,649,429.44
  5. Step 5: Solve for x
    x = 518,751,649,429.44/777,951.20
  6. Step 6: Final answer
    x = 666,817.73

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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.