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Finding the Fourth Proportional to 578,838.67, 867,794.34 and 275,080.39

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Solution

The fourth proportional to 578,838.67, 867,794.34 and 275,080.39 is: 412,400.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,838.67 : 867,794.34 = 275,080.39 : x
  2. Step 2: Convert to fraction form
    578,838.67/867,794.34 = 275,080.39/x
  3. Step 3: Cross multiply
    578,838.67x = 867,794.34 × 275,080.39
  4. Step 4: Simplify right side
    578,838.67x = 238,713,202,028.07
  5. Step 5: Solve for x
    x = 238,713,202,028.07/578,838.67
  6. Step 6: Final answer
    x = 412,400.23

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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.