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Finding the Fourth Proportional to 587,553.75, 810,829.31 and 319,281.75

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Solution

The fourth proportional to 587,553.75, 810,829.31 and 319,281.75 is: 440,611.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    587,553.75 : 810,829.31 = 319,281.75 : x
  2. Step 2: Convert to fraction form
    587,553.75/810,829.31 = 319,281.75/x
  3. Step 3: Cross multiply
    587,553.75x = 810,829.31 × 319,281.75
  4. Step 4: Simplify right side
    587,553.75x = 258,882,999,451.68
  5. Step 5: Solve for x
    x = 258,882,999,451.68/587,553.75
  6. Step 6: Final answer
    x = 440,611.60

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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.