Home / 820,183,131.88-1,131,730,964.66-498,143,515.56

Finding the Fourth Proportional to 820,183,131.88, 1,131,730,964.66 and 498,143,515.56

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Solution

The fourth proportional to 820,183,131.88, 1,131,730,964.66 and 498,143,515.56 is: 687,364,101.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,183,131.88 : 1,131,730,964.66 = 498,143,515.56 : x
  2. Step 2: Convert to fraction form
    820,183,131.88/1,131,730,964.66 = 498,143,515.56/x
  3. Step 3: Cross multiply
    820,183,131.88x = 1,131,730,964.66 × 498,143,515.56
  4. Step 4: Simplify right side
    820,183,131.88x = 563,764,441,403,842,560
  5. Step 5: Solve for x
    x = 563,764,441,403,842,560/820,183,131.88
  6. Step 6: Final answer
    x = 687,364,101.37

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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.