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Finding the Fourth Proportional to 644,860.80, 967,291.20 and 445,795.20

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Solution

The fourth proportional to 644,860.80, 967,291.20 and 445,795.20 is: 668,692.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,860.80 : 967,291.20 = 445,795.20 : x
  2. Step 2: Convert to fraction form
    644,860.80/967,291.20 = 445,795.20/x
  3. Step 3: Cross multiply
    644,860.80x = 967,291.20 × 445,795.20
  4. Step 4: Simplify right side
    644,860.80x = 431,213,773,962.24
  5. Step 5: Solve for x
    x = 431,213,773,962.24/644,860.80
  6. Step 6: Final answer
    x = 668,692.80

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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.