Home / 865,005.80-1,297,786.33-415,759.25

Finding the Fourth Proportional to 865,005.80, 1,297,786.33 and 415,759.25

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Solution

The fourth proportional to 865,005.80, 1,297,786.33 and 415,759.25 is: 623,772.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    865,005.80 : 1,297,786.33 = 415,759.25 : x
  2. Step 2: Convert to fraction form
    865,005.80/1,297,786.33 = 415,759.25/x
  3. Step 3: Cross multiply
    865,005.80x = 1,297,786.33 × 415,759.25
  4. Step 4: Simplify right side
    865,005.80x = 539,566,663,692.72
  5. Step 5: Solve for x
    x = 539,566,663,692.72/865,005.80
  6. Step 6: Final answer
    x = 623,772.31

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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.