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Finding the Fourth Proportional to 449,806.92, 621,198.36 and 389,086.08

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Solution

The fourth proportional to 449,806.92, 621,198.36 and 389,086.08 is: 537,340.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,806.92 : 621,198.36 = 389,086.08 : x
  2. Step 2: Convert to fraction form
    449,806.92/621,198.36 = 389,086.08/x
  3. Step 3: Cross multiply
    449,806.92x = 621,198.36 × 389,086.08
  4. Step 4: Simplify right side
    449,806.92x = 241,699,634,794.83
  5. Step 5: Solve for x
    x = 241,699,634,794.83/449,806.92
  6. Step 6: Final answer
    x = 537,340.85

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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.