Home / 874,657.78-1,206,990.45-487,452.60

Finding the Fourth Proportional to 874,657.78, 1,206,990.45 and 487,452.60

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Solution

The fourth proportional to 874,657.78, 1,206,990.45 and 487,452.60 is: 672,663.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    874,657.78 : 1,206,990.45 = 487,452.60 : x
  2. Step 2: Convert to fraction form
    874,657.78/1,206,990.45 = 487,452.60/x
  3. Step 3: Cross multiply
    874,657.78x = 1,206,990.45 × 487,452.60
  4. Step 4: Simplify right side
    874,657.78x = 588,350,633,027.67
  5. Step 5: Solve for x
    x = 588,350,633,027.67/874,657.78
  6. Step 6: Final answer
    x = 672,663.81

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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.