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Finding the Fourth Proportional to 587,485.52, 810,728.52 and 319,213.52

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Solution

The fourth proportional to 587,485.52, 810,728.52 and 319,213.52 is: 440,513.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    587,485.52 : 810,728.52 = 319,213.52 : x
  2. Step 2: Convert to fraction form
    587,485.52/810,728.52 = 319,213.52/x
  3. Step 3: Cross multiply
    587,485.52x = 810,728.52 × 319,213.52
  4. Step 4: Simplify right side
    587,485.52x = 258,795,504,633.59
  5. Step 5: Solve for x
    x = 258,795,504,633.59/587,485.52
  6. Step 6: Final answer
    x = 440,513.84

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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.