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Finding the Fourth Proportional to 647,862.20, 972,230.70 and 363,552.20

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Solution

The fourth proportional to 647,862.20, 972,230.70 and 363,552.20 is: 545,573.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,862.20 : 972,230.70 = 363,552.20 : x
  2. Step 2: Convert to fraction form
    647,862.20/972,230.70 = 363,552.20/x
  3. Step 3: Cross multiply
    647,862.20x = 972,230.70 × 363,552.20
  4. Step 4: Simplify right side
    647,862.20x = 353,456,609,892.54
  5. Step 5: Solve for x
    x = 353,456,609,892.54/647,862.20
  6. Step 6: Final answer
    x = 545,573.75

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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.