Home / 485,098.20-669,076.89-355,993.07

Finding the Fourth Proportional to 485,098.20, 669,076.89 and 355,993.07

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Solution

The fourth proportional to 485,098.20, 669,076.89 and 355,993.07 is: 491,007.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,098.20 : 669,076.89 = 355,993.07 : x
  2. Step 2: Convert to fraction form
    485,098.20/669,076.89 = 355,993.07/x
  3. Step 3: Cross multiply
    485,098.20x = 669,076.89 × 355,993.07
  4. Step 4: Simplify right side
    485,098.20x = 238,186,732,791.77
  5. Step 5: Solve for x
    x = 238,186,732,791.77/485,098.20
  6. Step 6: Final answer
    x = 491,007.25

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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.