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Finding the Fourth Proportional to 644,241.22, 889,094.02 and 357,761.30

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Solution

The fourth proportional to 644,241.22, 889,094.02 and 357,761.30 is: 493,733.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,241.22 : 889,094.02 = 357,761.30 : x
  2. Step 2: Convert to fraction form
    644,241.22/889,094.02 = 357,761.30/x
  3. Step 3: Cross multiply
    644,241.22x = 889,094.02 × 357,761.30
  4. Step 4: Simplify right side
    644,241.22x = 318,083,432,417.43
  5. Step 5: Solve for x
    x = 318,083,432,417.43/644,241.22
  6. Step 6: Final answer
    x = 493,733.44

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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.