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Finding the Fourth Proportional to 620,982.84, 930,694.86 and 265,578.96

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Solution

The fourth proportional to 620,982.84, 930,694.86 and 265,578.96 is: 398,035.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,982.84 : 930,694.86 = 265,578.96 : x
  2. Step 2: Convert to fraction form
    620,982.84/930,694.86 = 265,578.96/x
  3. Step 3: Cross multiply
    620,982.84x = 930,694.86 × 265,578.96
  4. Step 4: Simplify right side
    620,982.84x = 247,172,972,996.15
  5. Step 5: Solve for x
    x = 247,172,972,996.15/620,982.84
  6. Step 6: Final answer
    x = 398,035.11

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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.