Home / 1,098,964.80-1,648,447.20-990,489.60

Finding the Fourth Proportional to 1,098,964.80, 1,648,447.20 and 990,489.60

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Solution

The fourth proportional to 1,098,964.80, 1,648,447.20 and 990,489.60 is: 1,485,734.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,098,964.80 : 1,648,447.20 = 990,489.60 : x
  2. Step 2: Convert to fraction form
    1,098,964.80/1,648,447.20 = 990,489.60/x
  3. Step 3: Cross multiply
    1,098,964.80x = 1,648,447.20 × 990,489.60
  4. Step 4: Simplify right side
    1,098,964.80x = 1,632,769,807,749.12
  5. Step 5: Solve for x
    x = 1,632,769,807,749.12/1,098,964.80
  6. Step 6: Final answer
    x = 1,485,734.40

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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.