Home / 821,251.60-1,231,294.20-315,617.20

Finding the Fourth Proportional to 821,251.60, 1,231,294.20 and 315,617.20

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Solution

The fourth proportional to 821,251.60, 1,231,294.20 and 315,617.20 is: 473,201.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,251.60 : 1,231,294.20 = 315,617.20 : x
  2. Step 2: Convert to fraction form
    821,251.60/1,231,294.20 = 315,617.20/x
  3. Step 3: Cross multiply
    821,251.60x = 1,231,294.20 × 315,617.20
  4. Step 4: Simplify right side
    821,251.60x = 388,617,627,780.24
  5. Step 5: Solve for x
    x = 388,617,627,780.24/821,251.60
  6. Step 6: Final answer
    x = 473,201.67

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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.