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Finding the Fourth Proportional to 635,998.40, 952,615.20 and 386,244.80

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Solution

The fourth proportional to 635,998.40, 952,615.20 and 386,244.80 is: 578,527.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    635,998.40 : 952,615.20 = 386,244.80 : x
  2. Step 2: Convert to fraction form
    635,998.40/952,615.20 = 386,244.80/x
  3. Step 3: Cross multiply
    635,998.40x = 952,615.20 × 386,244.80
  4. Step 4: Simplify right side
    635,998.40x = 367,942,667,400.96
  5. Step 5: Solve for x
    x = 367,942,667,400.96/635,998.40
  6. Step 6: Final answer
    x = 578,527.66

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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.