Home / 985,854.05-1,479,043.07-311,947.33

Finding the Fourth Proportional to 985,854.05, 1,479,043.07 and 311,947.33

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Solution

The fourth proportional to 985,854.05, 1,479,043.07 and 311,947.33 is: 468,003.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    985,854.05 : 1,479,043.07 = 311,947.33 : x
  2. Step 2: Convert to fraction form
    985,854.05/1,479,043.07 = 311,947.33/x
  3. Step 3: Cross multiply
    985,854.05x = 1,479,043.07 × 311,947.33
  4. Step 4: Simplify right side
    985,854.05x = 461,383,527,686.55
  5. Step 5: Solve for x
    x = 461,383,527,686.55/985,854.05
  6. Step 6: Final answer
    x = 468,003.89

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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.