Home / 664,302,005.10-996,453,007.65-387,669,249.90

Finding the Fourth Proportional to 664,302,005.10, 996,453,007.65 and 387,669,249.90

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Solution

The fourth proportional to 664,302,005.10, 996,453,007.65 and 387,669,249.90 is: 581,503,874.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,302,005.10 : 996,453,007.65 = 387,669,249.90 : x
  2. Step 2: Convert to fraction form
    664,302,005.10/996,453,007.65 = 387,669,249.90/x
  3. Step 3: Cross multiply
    664,302,005.10x = 996,453,007.65 × 387,669,249.90
  4. Step 4: Simplify right side
    664,302,005.10x = 386,294,190,036,274,432
  5. Step 5: Solve for x
    x = 386,294,190,036,274,432/664,302,005.10
  6. Step 6: Final answer
    x = 581,503,874.85

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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.