Home / 7,128,121.20-10,692,181.80-3,534,442.80

Finding the Fourth Proportional to 7,128,121.20, 10,692,181.80 and 3,534,442.80

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Solution

The fourth proportional to 7,128,121.20, 10,692,181.80 and 3,534,442.80 is: 5,301,664.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,128,121.20 : 10,692,181.80 = 3,534,442.80 : x
  2. Step 2: Convert to fraction form
    7,128,121.20/10,692,181.80 = 3,534,442.80/x
  3. Step 3: Cross multiply
    7,128,121.20x = 10,692,181.80 × 3,534,442.80
  4. Step 4: Simplify right side
    7,128,121.20x = 37,790,904,979,301.04
  5. Step 5: Solve for x
    x = 37,790,904,979,301.04/7,128,121.20
  6. Step 6: Final answer
    x = 5,301,664.20

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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.