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Finding the Fourth Proportional to 523,039,670.88, 721,794,711.60 and 303,150,642.72

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Solution

The fourth proportional to 523,039,670.88, 721,794,711.60 and 303,150,642.72 is: 418,347,867.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    523,039,670.88 : 721,794,711.60 = 303,150,642.72 : x
  2. Step 2: Convert to fraction form
    523,039,670.88/721,794,711.60 = 303,150,642.72/x
  3. Step 3: Cross multiply
    523,039,670.88x = 721,794,711.60 × 303,150,642.72
  4. Step 4: Simplify right side
    523,039,670.88x = 218,812,530,733,437,056
  5. Step 5: Solve for x
    x = 218,812,530,733,437,056/523,039,670.88
  6. Step 6: Final answer
    x = 418,347,867.12

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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.