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Finding the Fourth Proportional to 644,900.52, 889,956.12 and 358,414.80

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Solution

The fourth proportional to 644,900.52, 889,956.12 and 358,414.80 is: 494,608.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,900.52 : 889,956.12 = 358,414.80 : x
  2. Step 2: Convert to fraction form
    644,900.52/889,956.12 = 358,414.80/x
  3. Step 3: Cross multiply
    644,900.52x = 889,956.12 × 358,414.80
  4. Step 4: Simplify right side
    644,900.52x = 318,973,444,758.58
  5. Step 5: Solve for x
    x = 318,973,444,758.58/644,900.52
  6. Step 6: Final answer
    x = 494,608.76

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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.