Home / 638,396,778.84-880,987,156.88-345,041,346.84

Finding the Fourth Proportional to 638,396,778.84, 880,987,156.88 and 345,041,346.84

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Solution

The fourth proportional to 638,396,778.84, 880,987,156.88 and 345,041,346.84 is: 476,156,843.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,396,778.84 : 880,987,156.88 = 345,041,346.84 : x
  2. Step 2: Convert to fraction form
    638,396,778.84/880,987,156.88 = 345,041,346.84/x
  3. Step 3: Cross multiply
    638,396,778.84x = 880,987,156.88 × 345,041,346.84
  4. Step 4: Simplify right side
    638,396,778.84x = 303,976,995,156,892,352
  5. Step 5: Solve for x
    x = 303,976,995,156,892,352/638,396,778.84
  6. Step 6: Final answer
    x = 476,156,843.57

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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.