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Finding the Fourth Proportional to 777,794.90, 1,166,692.35 and 644,934.65

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Solution

The fourth proportional to 777,794.90, 1,166,692.35 and 644,934.65 is: 967,401.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    777,794.90 : 1,166,692.35 = 644,934.65 : x
  2. Step 2: Convert to fraction form
    777,794.90/1,166,692.35 = 644,934.65/x
  3. Step 3: Cross multiply
    777,794.90x = 1,166,692.35 × 644,934.65
  4. Step 4: Simplify right side
    777,794.90x = 752,440,322,404.93
  5. Step 5: Solve for x
    x = 752,440,322,404.93/777,794.90
  6. Step 6: Final answer
    x = 967,401.98

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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.