Home / 1,761,840.80-2,642,761.20-1,478,405.60

Finding the Fourth Proportional to 1,761,840.80, 2,642,761.20 and 1,478,405.60

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Solution

The fourth proportional to 1,761,840.80, 2,642,761.20 and 1,478,405.60 is: 2,217,608.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,761,840.80 : 2,642,761.20 = 1,478,405.60 : x
  2. Step 2: Convert to fraction form
    1,761,840.80/2,642,761.20 = 1,478,405.60/x
  3. Step 3: Cross multiply
    1,761,840.80x = 2,642,761.20 × 1,478,405.60
  4. Step 4: Simplify right side
    1,761,840.80x = 3,907,072,957,542.72
  5. Step 5: Solve for x
    x = 3,907,072,957,542.72/1,761,840.80
  6. Step 6: Final answer
    x = 2,217,608.40

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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.