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Finding the Fourth Proportional to 777,846.80, 1,166,770.20 and 186,870.80

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Solution

The fourth proportional to 777,846.80, 1,166,770.20 and 186,870.80 is: 280,306.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    777,846.80 : 1,166,770.20 = 186,870.80 : x
  2. Step 2: Convert to fraction form
    777,846.80/1,166,770.20 = 186,870.80/x
  3. Step 3: Cross multiply
    777,846.80x = 1,166,770.20 × 186,870.80
  4. Step 4: Simplify right side
    777,846.80x = 218,035,280,690.16
  5. Step 5: Solve for x
    x = 218,035,280,690.16/777,846.80
  6. Step 6: Final answer
    x = 280,306.20

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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.