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Finding the Fourth Proportional to 647,999.37, 972,432.99 and 268,920.45

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Solution

The fourth proportional to 647,999.37, 972,432.99 and 268,920.45 is: 403,560.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,999.37 : 972,432.99 = 268,920.45 : x
  2. Step 2: Convert to fraction form
    647,999.37/972,432.99 = 268,920.45/x
  3. Step 3: Cross multiply
    647,999.37x = 972,432.99 × 268,920.45
  4. Step 4: Simplify right side
    647,999.37x = 261,507,117,265.65
  5. Step 5: Solve for x
    x = 261,507,117,265.65/647,999.37
  6. Step 6: Final answer
    x = 403,560.76

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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.