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Finding the Fourth Proportional to 427,373.62, 639,896.96 and 300,824.08

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Solution

The fourth proportional to 427,373.62, 639,896.96 and 300,824.08 is: 450,417.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,373.62 : 639,896.96 = 300,824.08 : x
  2. Step 2: Convert to fraction form
    427,373.62/639,896.96 = 300,824.08/x
  3. Step 3: Cross multiply
    427,373.62x = 639,896.96 × 300,824.08
  4. Step 4: Simplify right side
    427,373.62x = 192,496,413,439.12
  5. Step 5: Solve for x
    x = 192,496,413,439.12/427,373.62
  6. Step 6: Final answer
    x = 450,417.17

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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.