Home / 2,807,128.80-4,212,151.20-1,311,220.80

Finding the Fourth Proportional to 2,807,128.80, 4,212,151.20 and 1,311,220.80

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Solution

The fourth proportional to 2,807,128.80, 4,212,151.20 and 1,311,220.80 is: 1,967,512.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,807,128.80 : 4,212,151.20 = 1,311,220.80 : x
  2. Step 2: Convert to fraction form
    2,807,128.80/4,212,151.20 = 1,311,220.80/x
  3. Step 3: Cross multiply
    2,807,128.80x = 4,212,151.20 × 1,311,220.80
  4. Step 4: Simplify right side
    2,807,128.80x = 5,523,060,266,184.96
  5. Step 5: Solve for x
    x = 5,523,060,266,184.96/2,807,128.80
  6. Step 6: Final answer
    x = 1,967,512.24

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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.