Home / 770,198.40-1,152,187.20-666,172.80

Finding the Fourth Proportional to 770,198.40, 1,152,187.20 and 666,172.80

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Solution

The fourth proportional to 770,198.40, 1,152,187.20 and 666,172.80 is: 996,568.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    770,198.40 : 1,152,187.20 = 666,172.80 : x
  2. Step 2: Convert to fraction form
    770,198.40/1,152,187.20 = 666,172.80/x
  3. Step 3: Cross multiply
    770,198.40x = 1,152,187.20 × 666,172.80
  4. Step 4: Simplify right side
    770,198.40x = 767,555,773,148.16
  5. Step 5: Solve for x
    x = 767,555,773,148.16/770,198.40
  6. Step 6: Final answer
    x = 996,568.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.