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Finding the Fourth Proportional to 644,512.80, 889,397.48 and 358,050.36

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Solution

The fourth proportional to 644,512.80, 889,397.48 and 358,050.36 is: 494,092.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,512.80 : 889,397.48 = 358,050.36 : x
  2. Step 2: Convert to fraction form
    644,512.80/889,397.48 = 358,050.36/x
  3. Step 3: Cross multiply
    644,512.80x = 889,397.48 × 358,050.36
  4. Step 4: Simplify right side
    644,512.80x = 318,449,087,897.09
  5. Step 5: Solve for x
    x = 318,449,087,897.09/644,512.80
  6. Step 6: Final answer
    x = 494,092.73

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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.