Home / 644,279.26-889,106.07-357,799.90

Finding the Fourth Proportional to 644,279.26, 889,106.07 and 357,799.90

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Solution

The fourth proportional to 644,279.26, 889,106.07 and 357,799.90 is: 493,764.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,279.26 : 889,106.07 = 357,799.90 : x
  2. Step 2: Convert to fraction form
    644,279.26/889,106.07 = 357,799.90/x
  3. Step 3: Cross multiply
    644,279.26x = 889,106.07 × 357,799.90
  4. Step 4: Simplify right side
    644,279.26x = 318,122,062,935.39
  5. Step 5: Solve for x
    x = 318,122,062,935.39/644,279.26
  6. Step 6: Final answer
    x = 493,764.25

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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.