Home / 780,140.80-1,170,211.20-443,051.20

Finding the Fourth Proportional to 780,140.80, 1,170,211.20 and 443,051.20

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Solution

The fourth proportional to 780,140.80, 1,170,211.20 and 443,051.20 is: 664,576.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,140.80 : 1,170,211.20 = 443,051.20 : x
  2. Step 2: Convert to fraction form
    780,140.80/1,170,211.20 = 443,051.20/x
  3. Step 3: Cross multiply
    780,140.80x = 1,170,211.20 × 443,051.20
  4. Step 4: Simplify right side
    780,140.80x = 518,463,476,413.44
  5. Step 5: Solve for x
    x = 518,463,476,413.44/780,140.80
  6. Step 6: Final answer
    x = 664,576.80

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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.