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Finding the Fourth Proportional to 522,189, 720,621.54 and 295,849.80

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Solution

The fourth proportional to 522,189, 720,621.54 and 295,849.80 is: 408,273.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,189 : 720,621.54 = 295,849.80 : x
  2. Step 2: Convert to fraction form
    522,189/720,621.54 = 295,849.80/x
  3. Step 3: Cross multiply
    522,189x = 720,621.54 × 295,849.80
  4. Step 4: Simplify right side
    522,189x = 213,195,738,484.69
  5. Step 5: Solve for x
    x = 213,195,738,484.69/522,189
  6. Step 6: Final answer
    x = 408,273.13

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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.