Home / 412,629.18-618,739.47-146,349.78

Finding the Fourth Proportional to 412,629.18, 618,739.47 and 146,349.78

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Solution

The fourth proportional to 412,629.18, 618,739.47 and 146,349.78 is: 219,452.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    412,629.18 : 618,739.47 = 146,349.78 : x
  2. Step 2: Convert to fraction form
    412,629.18/618,739.47 = 146,349.78/x
  3. Step 3: Cross multiply
    412,629.18x = 618,739.47 × 146,349.78
  4. Step 4: Simplify right side
    412,629.18x = 90,552,385,311.82
  5. Step 5: Solve for x
    x = 90,552,385,311.82/412,629.18
  6. Step 6: Final answer
    x = 219,452.21

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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.