Home / 689,361.23-951,287.79-398,926.28

Finding the Fourth Proportional to 689,361.23, 951,287.79 and 398,926.28

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Solution

The fourth proportional to 689,361.23, 951,287.79 and 398,926.28 is: 550,500.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,361.23 : 951,287.79 = 398,926.28 : x
  2. Step 2: Convert to fraction form
    689,361.23/951,287.79 = 398,926.28/x
  3. Step 3: Cross multiply
    689,361.23x = 951,287.79 × 398,926.28
  4. Step 4: Simplify right side
    689,361.23x = 379,493,699,274.12
  5. Step 5: Solve for x
    x = 379,493,699,274.12/689,361.23
  6. Step 6: Final answer
    x = 550,500.50

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.