Home / 641,369.28-885,362.22-399,772.20

Finding the Fourth Proportional to 641,369.28, 885,362.22 and 399,772.20

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Solution

The fourth proportional to 641,369.28, 885,362.22 and 399,772.20 is: 551,855.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,369.28 : 885,362.22 = 399,772.20 : x
  2. Step 2: Convert to fraction form
    641,369.28/885,362.22 = 399,772.20/x
  3. Step 3: Cross multiply
    641,369.28x = 885,362.22 × 399,772.20
  4. Step 4: Simplify right side
    641,369.28x = 353,943,202,486.28
  5. Step 5: Solve for x
    x = 353,943,202,486.28/641,369.28
  6. Step 6: Final answer
    x = 551,855.56

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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.