Home / 990,049.37-1,485,061.52-316,122.12

Finding the Fourth Proportional to 990,049.37, 1,485,061.52 and 316,122.12

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Solution

The fourth proportional to 990,049.37, 1,485,061.52 and 316,122.12 is: 474,179.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,049.37 : 1,485,061.52 = 316,122.12 : x
  2. Step 2: Convert to fraction form
    990,049.37/1,485,061.52 = 316,122.12/x
  3. Step 3: Cross multiply
    990,049.37x = 1,485,061.52 × 316,122.12
  4. Step 4: Simplify right side
    990,049.37x = 469,460,794,452.21
  5. Step 5: Solve for x
    x = 469,460,794,452.21/990,049.37
  6. Step 6: Final answer
    x = 474,179.18

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Double scale
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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.