Home / 815,479.20-1,223,218.80-282,823.20

Finding the Fourth Proportional to 815,479.20, 1,223,218.80 and 282,823.20

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Solution

The fourth proportional to 815,479.20, 1,223,218.80 and 282,823.20 is: 424,234.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,479.20 : 1,223,218.80 = 282,823.20 : x
  2. Step 2: Convert to fraction form
    815,479.20/1,223,218.80 = 282,823.20/x
  3. Step 3: Cross multiply
    815,479.20x = 1,223,218.80 × 282,823.20
  4. Step 4: Simplify right side
    815,479.20x = 345,954,655,316.16
  5. Step 5: Solve for x
    x = 345,954,655,316.16/815,479.20
  6. Step 6: Final answer
    x = 424,234.80

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1.5x scale

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.