Home / 7,128,078.80-10,692,118.20-5,214,891.20

Finding the Fourth Proportional to 7,128,078.80, 10,692,118.20 and 5,214,891.20

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Solution

The fourth proportional to 7,128,078.80, 10,692,118.20 and 5,214,891.20 is: 7,822,336.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,128,078.80 : 10,692,118.20 = 5,214,891.20 : x
  2. Step 2: Convert to fraction form
    7,128,078.80/10,692,118.20 = 5,214,891.20/x
  3. Step 3: Cross multiply
    7,128,078.80x = 10,692,118.20 × 5,214,891.20
  4. Step 4: Simplify right side
    7,128,078.80x = 55,758,233,110,539.84
  5. Step 5: Solve for x
    x = 55,758,233,110,539.84/7,128,078.80
  6. Step 6: Final answer
    x = 7,822,336.80

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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.