Home / 1,313,391,120.73-1,812,520,401.83-718,700,670.12

Finding the Fourth Proportional to 1,313,391,120.73, 1,812,520,401.83 and 718,700,670.12

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Solution

The fourth proportional to 1,313,391,120.73, 1,812,520,401.83 and 718,700,670.12 is: 991,829,171.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,313,391,120.73 : 1,812,520,401.83 = 718,700,670.12 : x
  2. Step 2: Convert to fraction form
    1,313,391,120.73/1,812,520,401.83 = 718,700,670.12/x
  3. Step 3: Cross multiply
    1,313,391,120.73x = 1,812,520,401.83 × 718,700,670.12
  4. Step 4: Simplify right side
    1,313,391,120.73x = 1,302,659,627,401,392,640
  5. Step 5: Solve for x
    x = 1,302,659,627,401,392,640/1,313,391,120.73
  6. Step 6: Final answer
    x = 991,829,171.71

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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.