Home / 28,190,765.60-42,282,001.20-7,998,048.80

Finding the Fourth Proportional to 28,190,765.60, 42,282,001.20 and 7,998,048.80

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Solution

The fourth proportional to 28,190,765.60, 42,282,001.20 and 7,998,048.80 is: 11,995,896.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,190,765.60 : 42,282,001.20 = 7,998,048.80 : x
  2. Step 2: Convert to fraction form
    28,190,765.60/42,282,001.20 = 7,998,048.80/x
  3. Step 3: Cross multiply
    28,190,765.60x = 42,282,001.20 × 7,998,048.80
  4. Step 4: Simplify right side
    28,190,765.60x = 338,173,508,959,258.56
  5. Step 5: Solve for x
    x = 338,173,508,959,258.56/28,190,765.60
  6. Step 6: Final answer
    x = 11,995,896.59

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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.