Home / 28,505,708.80-42,758,563.20-11,478,601.60

Finding the Fourth Proportional to 28,505,708.80, 42,758,563.20 and 11,478,601.60

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Solution

The fourth proportional to 28,505,708.80, 42,758,563.20 and 11,478,601.60 is: 17,217,902.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,505,708.80 : 42,758,563.20 = 11,478,601.60 : x
  2. Step 2: Convert to fraction form
    28,505,708.80/42,758,563.20 = 11,478,601.60/x
  3. Step 3: Cross multiply
    28,505,708.80x = 42,758,563.20 × 11,478,601.60
  4. Step 4: Simplify right side
    28,505,708.80x = 490,808,511,961,221.12
  5. Step 5: Solve for x
    x = 490,808,511,961,221.12/28,505,708.80
  6. Step 6: Final answer
    x = 17,217,902.40

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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.