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Finding the Fourth Proportional to 516,694.78, 774,112.16 and 486,299.89

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Solution

The fourth proportional to 516,694.78, 774,112.16 and 486,299.89 is: 728,574.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    516,694.78 : 774,112.16 = 486,299.89 : x
  2. Step 2: Convert to fraction form
    516,694.78/774,112.16 = 486,299.89/x
  3. Step 3: Cross multiply
    516,694.78x = 774,112.16 × 486,299.89
  4. Step 4: Simplify right side
    516,694.78x = 376,450,658,255.66
  5. Step 5: Solve for x
    x = 376,450,658,255.66/516,694.78
  6. Step 6: Final answer
    x = 728,574.53

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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.