Home / 500,905.46-691,323.73-317,161.11

Finding the Fourth Proportional to 500,905.46, 691,323.73 and 317,161.11

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Solution

The fourth proportional to 500,905.46, 691,323.73 and 317,161.11 is: 437,729.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,905.46 : 691,323.73 = 317,161.11 : x
  2. Step 2: Convert to fraction form
    500,905.46/691,323.73 = 317,161.11/x
  3. Step 3: Cross multiply
    500,905.46x = 691,323.73 × 317,161.11
  4. Step 4: Simplify right side
    500,905.46x = 219,261,001,576.14
  5. Step 5: Solve for x
    x = 219,261,001,576.14/500,905.46
  6. Step 6: Final answer
    x = 437,729.31

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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.