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Finding the Fourth Proportional to 501,301.45, 691,839.73 and 274,990.69

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Solution

The fourth proportional to 501,301.45, 691,839.73 and 274,990.69 is: 379,511.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    501,301.45 : 691,839.73 = 274,990.69 : x
  2. Step 2: Convert to fraction form
    501,301.45/691,839.73 = 274,990.69/x
  3. Step 3: Cross multiply
    501,301.45x = 691,839.73 × 274,990.69
  4. Step 4: Simplify right side
    501,301.45x = 190,249,484,722.11
  5. Step 5: Solve for x
    x = 190,249,484,722.11/501,301.45
  6. Step 6: Final answer
    x = 379,511.14

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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.