Home / 812,342.80-1,121,074.50-449,806.69

Finding the Fourth Proportional to 812,342.80, 1,121,074.50 and 449,806.69

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Solution

The fourth proportional to 812,342.80, 1,121,074.50 and 449,806.69 is: 620,756.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,342.80 : 1,121,074.50 = 449,806.69 : x
  2. Step 2: Convert to fraction form
    812,342.80/1,121,074.50 = 449,806.69/x
  3. Step 3: Cross multiply
    812,342.80x = 1,121,074.50 × 449,806.69
  4. Step 4: Simplify right side
    812,342.80x = 504,266,810,088.41
  5. Step 5: Solve for x
    x = 504,266,810,088.41/812,342.80
  6. Step 6: Final answer
    x = 620,756.18

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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.