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Finding the Fourth Proportional to 647,847.20, 972,208.20 and 363,537.20

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Solution

The fourth proportional to 647,847.20, 972,208.20 and 363,537.20 is: 545,551.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,847.20 : 972,208.20 = 363,537.20 : x
  2. Step 2: Convert to fraction form
    647,847.20/972,208.20 = 363,537.20/x
  3. Step 3: Cross multiply
    647,847.20x = 972,208.20 × 363,537.20
  4. Step 4: Simplify right side
    647,847.20x = 353,433,846,845.04
  5. Step 5: Solve for x
    x = 353,433,846,845.04/647,847.20
  6. Step 6: Final answer
    x = 545,551.25

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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.