Home / 821,271.96-1,231,694.10-347,713.56

Finding the Fourth Proportional to 821,271.96, 1,231,694.10 and 347,713.56

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Solution

The fourth proportional to 821,271.96, 1,231,694.10 and 347,713.56 is: 521,479.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,271.96 : 1,231,694.10 = 347,713.56 : x
  2. Step 2: Convert to fraction form
    821,271.96/1,231,694.10 = 347,713.56/x
  3. Step 3: Cross multiply
    821,271.96x = 1,231,694.10 × 347,713.56
  4. Step 4: Simplify right side
    821,271.96x = 428,276,740,342.00
  5. Step 5: Solve for x
    x = 428,276,740,342.00/821,271.96
  6. Step 6: Final answer
    x = 521,479.80

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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.