Home / 638,396,788.38-880,987,169.96-345,041,356.38

Finding the Fourth Proportional to 638,396,788.38, 880,987,169.96 and 345,041,356.38

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Solution

The fourth proportional to 638,396,788.38, 880,987,169.96 and 345,041,356.38 is: 476,156,856.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,396,788.38 : 880,987,169.96 = 345,041,356.38 : x
  2. Step 2: Convert to fraction form
    638,396,788.38/880,987,169.96 = 345,041,356.38/x
  3. Step 3: Cross multiply
    638,396,788.38x = 880,987,169.96 × 345,041,356.38
  4. Step 4: Simplify right side
    638,396,788.38x = 303,977,008,076,376,000
  5. Step 5: Solve for x
    x = 303,977,008,076,376,000/638,396,788.38
  6. Step 6: Final answer
    x = 476,156,856.69

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.