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Finding the Fourth Proportional to 800,661.31, 1,200,313.69 and 351,041.45

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Solution

The fourth proportional to 800,661.31, 1,200,313.69 and 351,041.45 is: 526,264.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    800,661.31 : 1,200,313.69 = 351,041.45 : x
  2. Step 2: Convert to fraction form
    800,661.31/1,200,313.69 = 351,041.45/x
  3. Step 3: Cross multiply
    800,661.31x = 1,200,313.69 × 351,041.45
  4. Step 4: Simplify right side
    800,661.31x = 421,359,851,313.28
  5. Step 5: Solve for x
    x = 421,359,851,313.28/800,661.31
  6. Step 6: Final answer
    x = 526,264.79

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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.