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Finding the Fourth Proportional to 644,371.58, 889,208.18 and 357,910.04

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Solution

The fourth proportional to 644,371.58, 889,208.18 and 357,910.04 is: 493,902.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,371.58 : 889,208.18 = 357,910.04 : x
  2. Step 2: Convert to fraction form
    644,371.58/889,208.18 = 357,910.04/x
  3. Step 3: Cross multiply
    644,371.58x = 889,208.18 × 357,910.04
  4. Step 4: Simplify right side
    644,371.58x = 318,256,535,272.13
  5. Step 5: Solve for x
    x = 318,256,535,272.13/644,371.58
  6. Step 6: Final answer
    x = 493,902.19

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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.