Home / 821,669.70-1,231,717.20-347,703.06

Finding the Fourth Proportional to 821,669.70, 1,231,717.20 and 347,703.06

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Solution

The fourth proportional to 821,669.70, 1,231,717.20 and 347,703.06 is: 521,221.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,669.70 : 1,231,717.20 = 347,703.06 : x
  2. Step 2: Convert to fraction form
    821,669.70/1,231,717.20 = 347,703.06/x
  3. Step 3: Cross multiply
    821,669.70x = 1,231,717.20 × 347,703.06
  4. Step 4: Simplify right side
    821,669.70x = 428,271,839,494.63
  5. Step 5: Solve for x
    x = 428,271,839,494.63/821,669.70
  6. Step 6: Final answer
    x = 521,221.41

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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.