Home / 626,346,138.30-940,340,310.33-420,007,839.42

Finding the Fourth Proportional to 626,346,138.30, 940,340,310.33 and 420,007,839.42

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Solution

The fourth proportional to 626,346,138.30, 940,340,310.33 and 420,007,839.42 is: 630,562,364.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,346,138.30 : 940,340,310.33 = 420,007,839.42 : x
  2. Step 2: Convert to fraction form
    626,346,138.30/940,340,310.33 = 420,007,839.42/x
  3. Step 3: Cross multiply
    626,346,138.30x = 940,340,310.33 × 420,007,839.42
  4. Step 4: Simplify right side
    626,346,138.30x = 394,950,302,061,235,648
  5. Step 5: Solve for x
    x = 394,950,302,061,235,648/626,346,138.30
  6. Step 6: Final answer
    x = 630,562,364.66

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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.