Home / 990,133.40-1,485,054.30-280,233.20

Finding the Fourth Proportional to 990,133.40, 1,485,054.30 and 280,233.20

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Solution

The fourth proportional to 990,133.40, 1,485,054.30 and 280,233.20 is: 420,308.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,133.40 : 1,485,054.30 = 280,233.20 : x
  2. Step 2: Convert to fraction form
    990,133.40/1,485,054.30 = 280,233.20/x
  3. Step 3: Cross multiply
    990,133.40x = 1,485,054.30 × 280,233.20
  4. Step 4: Simplify right side
    990,133.40x = 416,161,518,662.76
  5. Step 5: Solve for x
    x = 416,161,518,662.76/990,133.40
  6. Step 6: Final answer
    x = 420,308.53

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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.