Home / 693,387.60-1,038,963.60-392,974.80

Finding the Fourth Proportional to 693,387.60, 1,038,963.60 and 392,974.80

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Solution

The fourth proportional to 693,387.60, 1,038,963.60 and 392,974.80 is: 588,828.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,387.60 : 1,038,963.60 = 392,974.80 : x
  2. Step 2: Convert to fraction form
    693,387.60/1,038,963.60 = 392,974.80/x
  3. Step 3: Cross multiply
    693,387.60x = 1,038,963.60 × 392,974.80
  4. Step 4: Simplify right side
    693,387.60x = 408,286,512,917.28
  5. Step 5: Solve for x
    x = 408,286,512,917.28/693,387.60
  6. Step 6: Final answer
    x = 588,828.69

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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.