Home / 638,396,778.59-880,987,156.52-345,041,346.59

Finding the Fourth Proportional to 638,396,778.59, 880,987,156.52 and 345,041,346.59

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Solution

The fourth proportional to 638,396,778.59, 880,987,156.52 and 345,041,346.59 is: 476,156,843.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,396,778.59 : 880,987,156.52 = 345,041,346.59 : x
  2. Step 2: Convert to fraction form
    638,396,778.59/880,987,156.52 = 345,041,346.59/x
  3. Step 3: Cross multiply
    638,396,778.59x = 880,987,156.52 × 345,041,346.59
  4. Step 4: Simplify right side
    638,396,778.59x = 303,976,994,814,155,840
  5. Step 5: Solve for x
    x = 303,976,994,814,155,840/638,396,778.59
  6. Step 6: Final answer
    x = 476,156,843.22

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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.