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Finding the Fourth Proportional to 501,386, 691,912.68 and 275,032.04

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Solution

The fourth proportional to 501,386, 691,912.68 and 275,032.04 is: 379,544.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    501,386 : 691,912.68 = 275,032.04 : x
  2. Step 2: Convert to fraction form
    501,386/691,912.68 = 275,032.04/x
  3. Step 3: Cross multiply
    501,386x = 691,912.68 × 275,032.04
  4. Step 4: Simplify right side
    501,386x = 190,298,155,882.27
  5. Step 5: Solve for x
    x = 190,298,155,882.27/501,386
  6. Step 6: Final answer
    x = 379,544.22

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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.