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Finding the Fourth Proportional to 445,305.36, 665,513.16 and 325,614.36

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Solution

The fourth proportional to 445,305.36, 665,513.16 and 325,614.36 is: 486,633.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,305.36 : 665,513.16 = 325,614.36 : x
  2. Step 2: Convert to fraction form
    445,305.36/665,513.16 = 325,614.36/x
  3. Step 3: Cross multiply
    445,305.36x = 665,513.16 × 325,614.36
  4. Step 4: Simplify right side
    445,305.36x = 216,700,641,664.98
  5. Step 5: Solve for x
    x = 216,700,641,664.98/445,305.36
  6. Step 6: Final answer
    x = 486,633.80

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.