Home / 812,198.86-1,120,482.60-489,729.81

Finding the Fourth Proportional to 812,198.86, 1,120,482.60 and 489,729.81

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Solution

The fourth proportional to 812,198.86, 1,120,482.60 and 489,729.81 is: 675,615.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,198.86 : 1,120,482.60 = 489,729.81 : x
  2. Step 2: Convert to fraction form
    812,198.86/1,120,482.60 = 489,729.81/x
  3. Step 3: Cross multiply
    812,198.86x = 1,120,482.60 × 489,729.81
  4. Step 4: Simplify right side
    812,198.86x = 548,733,731,136.83
  5. Step 5: Solve for x
    x = 548,733,731,136.83/812,198.86
  6. Step 6: Final answer
    x = 675,615.00

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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.