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Finding the Fourth Proportional to 456,665.05, 630,451.11 and 275,422.69

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Solution

The fourth proportional to 456,665.05, 630,451.11 and 275,422.69 is: 380,236.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    456,665.05 : 630,451.11 = 275,422.69 : x
  2. Step 2: Convert to fraction form
    456,665.05/630,451.11 = 275,422.69/x
  3. Step 3: Cross multiply
    456,665.05x = 630,451.11 × 275,422.69
  4. Step 4: Simplify right side
    456,665.05x = 173,640,540,629.69
  5. Step 5: Solve for x
    x = 173,640,540,629.69/456,665.05
  6. Step 6: Final answer
    x = 380,236.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.