Home / 815,638.50-1,223,717.76-342,196.74

Finding the Fourth Proportional to 815,638.50, 1,223,717.76 and 342,196.74

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Solution

The fourth proportional to 815,638.50, 1,223,717.76 and 342,196.74 is: 513,404.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,638.50 : 1,223,717.76 = 342,196.74 : x
  2. Step 2: Convert to fraction form
    815,638.50/1,223,717.76 = 342,196.74/x
  3. Step 3: Cross multiply
    815,638.50x = 1,223,717.76 × 342,196.74
  4. Step 4: Simplify right side
    815,638.50x = 418,752,228,152.10
  5. Step 5: Solve for x
    x = 418,752,228,152.10/815,638.50
  6. Step 6: Final answer
    x = 513,404.20

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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.