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Finding the Fourth Proportional to 644,394.77, 966,991.31 and 374,649.85

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Solution

The fourth proportional to 644,394.77, 966,991.31 and 374,649.85 is: 562,206.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,394.77 : 966,991.31 = 374,649.85 : x
  2. Step 2: Convert to fraction form
    644,394.77/966,991.31 = 374,649.85/x
  3. Step 3: Cross multiply
    644,394.77x = 966,991.31 × 374,649.85
  4. Step 4: Simplify right side
    644,394.77x = 362,283,147,761.95
  5. Step 5: Solve for x
    x = 362,283,147,761.95/644,394.77
  6. Step 6: Final answer
    x = 562,206.84

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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.