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Finding the Fourth Proportional to 647,796.18, 893,960.31 and 361,334.82

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Solution

The fourth proportional to 647,796.18, 893,960.31 and 361,334.82 is: 498,642.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,796.18 : 893,960.31 = 361,334.82 : x
  2. Step 2: Convert to fraction form
    647,796.18/893,960.31 = 361,334.82/x
  3. Step 3: Cross multiply
    647,796.18x = 893,960.31 × 361,334.82
  4. Step 4: Simplify right side
    647,796.18x = 323,018,987,700.99
  5. Step 5: Solve for x
    x = 323,018,987,700.99/647,796.18
  6. Step 6: Final answer
    x = 498,642.93

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.