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Finding the Fourth Proportional to 636,665.68, 878,723.46 and 364,915.75

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Solution

The fourth proportional to 636,665.68, 878,723.46 and 364,915.75 is: 503,655.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,665.68 : 878,723.46 = 364,915.75 : x
  2. Step 2: Convert to fraction form
    636,665.68/878,723.46 = 364,915.75/x
  3. Step 3: Cross multiply
    636,665.68x = 878,723.46 × 364,915.75
  4. Step 4: Simplify right side
    636,665.68x = 320,660,030,448.50
  5. Step 5: Solve for x
    x = 320,660,030,448.50/636,665.68
  6. Step 6: Final answer
    x = 503,655.28

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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.