Home / 815,316.21-1,223,191.20-282,836.37

Finding the Fourth Proportional to 815,316.21, 1,223,191.20 and 282,836.37

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Solution

The fourth proportional to 815,316.21, 1,223,191.20 and 282,836.37 is: 424,329.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,316.21 : 1,223,191.20 = 282,836.37 : x
  2. Step 2: Convert to fraction form
    815,316.21/1,223,191.20 = 282,836.37/x
  3. Step 3: Cross multiply
    815,316.21x = 1,223,191.20 × 282,836.37
  4. Step 4: Simplify right side
    815,316.21x = 345,962,958,823.94
  5. Step 5: Solve for x
    x = 345,962,958,823.94/815,316.21
  6. Step 6: Final answer
    x = 424,329.79

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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.