Home / 925,915.78-1,387,286.31-621,739.78

Finding the Fourth Proportional to 925,915.78, 1,387,286.31 and 621,739.78

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Solution

The fourth proportional to 925,915.78, 1,387,286.31 and 621,739.78 is: 931,543.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    925,915.78 : 1,387,286.31 = 621,739.78 : x
  2. Step 2: Convert to fraction form
    925,915.78/1,387,286.31 = 621,739.78/x
  3. Step 3: Cross multiply
    925,915.78x = 1,387,286.31 × 621,739.78
  4. Step 4: Simplify right side
    925,915.78x = 862,531,085,176.41
  5. Step 5: Solve for x
    x = 862,531,085,176.41/925,915.78
  6. Step 6: Final answer
    x = 931,543.78

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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.