Home / 3,120,940.80-4,681,540.80-990,964.80

Finding the Fourth Proportional to 3,120,940.80, 4,681,540.80 and 990,964.80

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Solution

The fourth proportional to 3,120,940.80, 4,681,540.80 and 990,964.80 is: 1,486,488.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,120,940.80 : 4,681,540.80 = 990,964.80 : x
  2. Step 2: Convert to fraction form
    3,120,940.80/4,681,540.80 = 990,964.80/x
  3. Step 3: Cross multiply
    3,120,940.80x = 4,681,540.80 × 990,964.80
  4. Step 4: Simplify right side
    3,120,940.80x = 4,639,242,142,563.84
  5. Step 5: Solve for x
    x = 4,639,242,142,563.84/3,120,940.80
  6. Step 6: Final answer
    x = 1,486,488.35

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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.