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Finding the Fourth Proportional to 885,471.32, 1,327,745.76 and 316,633.16

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Solution

The fourth proportional to 885,471.32, 1,327,745.76 and 316,633.16 is: 474,784.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    885,471.32 : 1,327,745.76 = 316,633.16 : x
  2. Step 2: Convert to fraction form
    885,471.32/1,327,745.76 = 316,633.16/x
  3. Step 3: Cross multiply
    885,471.32x = 1,327,745.76 × 316,633.16
  4. Step 4: Simplify right side
    885,471.32x = 420,408,335,665.40
  5. Step 5: Solve for x
    x = 420,408,335,665.40/885,471.32
  6. Step 6: Final answer
    x = 474,784.81

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Double scale
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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.