Home / 491,072.07-677,686.46-289,868.07

Finding the Fourth Proportional to 491,072.07, 677,686.46 and 289,868.07

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Solution

The fourth proportional to 491,072.07, 677,686.46 and 289,868.07 is: 400,022.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,072.07 : 677,686.46 = 289,868.07 : x
  2. Step 2: Convert to fraction form
    491,072.07/677,686.46 = 289,868.07/x
  3. Step 3: Cross multiply
    491,072.07x = 677,686.46 × 289,868.07
  4. Step 4: Simplify right side
    491,072.07x = 196,439,664,775.99
  5. Step 5: Solve for x
    x = 196,439,664,775.99/491,072.07
  6. Step 6: Final answer
    x = 400,022.07

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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.