Home / 780,375.75-1,170,025.79-307,115.43

Finding the Fourth Proportional to 780,375.75, 1,170,025.79 and 307,115.43

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Solution

The fourth proportional to 780,375.75, 1,170,025.79 and 307,115.43 is: 460,461.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,375.75 : 1,170,025.79 = 307,115.43 : x
  2. Step 2: Convert to fraction form
    780,375.75/1,170,025.79 = 307,115.43/x
  3. Step 3: Cross multiply
    780,375.75x = 1,170,025.79 × 307,115.43
  4. Step 4: Simplify right side
    780,375.75x = 359,332,972,071.36
  5. Step 5: Solve for x
    x = 359,332,972,071.36/780,375.75
  6. Step 6: Final answer
    x = 460,461.48

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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.