Home / 3,120,670.20-4,681,369.80-990,969.60

Finding the Fourth Proportional to 3,120,670.20, 4,681,369.80 and 990,969.60

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Solution

The fourth proportional to 3,120,670.20, 4,681,369.80 and 990,969.60 is: 1,486,570.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,120,670.20 : 4,681,369.80 = 990,969.60 : x
  2. Step 2: Convert to fraction form
    3,120,670.20/4,681,369.80 = 990,969.60/x
  3. Step 3: Cross multiply
    3,120,670.20x = 4,681,369.80 × 990,969.60
  4. Step 4: Simplify right side
    3,120,670.20x = 4,639,095,158,158.08
  5. Step 5: Solve for x
    x = 4,639,095,158,158.08/3,120,670.20
  6. Step 6: Final answer
    x = 1,486,570.15

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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.