Home / 801,715.20-1,201,190.40-380,083.20

Finding the Fourth Proportional to 801,715.20, 1,201,190.40 and 380,083.20

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Solution

The fourth proportional to 801,715.20, 1,201,190.40 and 380,083.20 is: 569,469.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    801,715.20 : 1,201,190.40 = 380,083.20 : x
  2. Step 2: Convert to fraction form
    801,715.20/1,201,190.40 = 380,083.20/x
  3. Step 3: Cross multiply
    801,715.20x = 1,201,190.40 × 380,083.20
  4. Step 4: Simplify right side
    801,715.20x = 456,552,291,041.28
  5. Step 5: Solve for x
    x = 456,552,291,041.28/801,715.20
  6. Step 6: Final answer
    x = 569,469.42

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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.