Home / 990,174.24-1,485,318.30-280,142.76

Finding the Fourth Proportional to 990,174.24, 1,485,318.30 and 280,142.76

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Solution

The fourth proportional to 990,174.24, 1,485,318.30 and 280,142.76 is: 420,230.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,174.24 : 1,485,318.30 = 280,142.76 : x
  2. Step 2: Convert to fraction form
    990,174.24/1,485,318.30 = 280,142.76/x
  3. Step 3: Cross multiply
    990,174.24x = 1,485,318.30 × 280,142.76
  4. Step 4: Simplify right side
    990,174.24x = 416,101,168,040.51
  5. Step 5: Solve for x
    x = 416,101,168,040.51/990,174.24
  6. Step 6: Final answer
    x = 420,230.25

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1.5x scale

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.