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Finding the Fourth Proportional to 449,407.86, 619,330.23 and 321,862.02

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Solution

The fourth proportional to 449,407.86, 619,330.23 and 321,862.02 is: 443,558.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,407.86 : 619,330.23 = 321,862.02 : x
  2. Step 2: Convert to fraction form
    449,407.86/619,330.23 = 321,862.02/x
  3. Step 3: Cross multiply
    449,407.86x = 619,330.23 × 321,862.02
  4. Step 4: Simplify right side
    449,407.86x = 199,338,878,874.87
  5. Step 5: Solve for x
    x = 199,338,878,874.87/449,407.86
  6. Step 6: Final answer
    x = 443,558.95

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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.