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Finding the Fourth Proportional to 449,454.61, 619,394.61 and 321,908.77

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Solution

The fourth proportional to 449,454.61, 619,394.61 and 321,908.77 is: 443,623.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,454.61 : 619,394.61 = 321,908.77 : x
  2. Step 2: Convert to fraction form
    449,454.61/619,394.61 = 321,908.77/x
  3. Step 3: Cross multiply
    449,454.61x = 619,394.61 × 321,908.77
  4. Step 4: Simplify right side
    449,454.61x = 199,388,557,049.73
  5. Step 5: Solve for x
    x = 199,388,557,049.73/449,454.61
  6. Step 6: Final answer
    x = 443,623.34

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1.5x scale

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.