Home / 6,121,651.60-9,171,979.80-3,990,638.80

Finding the Fourth Proportional to 6,121,651.60, 9,171,979.80 and 3,990,638.80

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Solution

The fourth proportional to 6,121,651.60, 9,171,979.80 and 3,990,638.80 is: 5,979,114.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,121,651.60 : 9,171,979.80 = 3,990,638.80 : x
  2. Step 2: Convert to fraction form
    6,121,651.60/9,171,979.80 = 3,990,638.80/x
  3. Step 3: Cross multiply
    6,121,651.60x = 9,171,979.80 × 3,990,638.80
  4. Step 4: Simplify right side
    6,121,651.60x = 36,602,058,462,696.24
  5. Step 5: Solve for x
    x = 36,602,058,462,696.24/6,121,651.60
  6. Step 6: Final answer
    x = 5,979,114.93

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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.