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Finding the Fourth Proportional to 644,888.80, 966,987.60 and 270,488.80

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Solution

The fourth proportional to 644,888.80, 966,987.60 and 270,488.80 is: 405,588.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,888.80 : 966,987.60 = 270,488.80 : x
  2. Step 2: Convert to fraction form
    644,888.80/966,987.60 = 270,488.80/x
  3. Step 3: Cross multiply
    644,888.80x = 966,987.60 × 270,488.80
  4. Step 4: Simplify right side
    644,888.80x = 261,559,315,538.88
  5. Step 5: Solve for x
    x = 261,559,315,538.88/644,888.80
  6. Step 6: Final answer
    x = 405,588.24

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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.