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Finding the Fourth Proportional to 613,994.28, 921,089.88 and 259,060.62

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Solution

The fourth proportional to 613,994.28, 921,089.88 and 259,060.62 is: 388,632.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,994.28 : 921,089.88 = 259,060.62 : x
  2. Step 2: Convert to fraction form
    613,994.28/921,089.88 = 259,060.62/x
  3. Step 3: Cross multiply
    613,994.28x = 921,089.88 × 259,060.62
  4. Step 4: Simplify right side
    613,994.28x = 238,618,115,388.53
  5. Step 5: Solve for x
    x = 238,618,115,388.53/613,994.28
  6. Step 6: Final answer
    x = 388,632.47

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.