Home / 818,345,456.72-1,226,679,609.61-621,191,509.64

Finding the Fourth Proportional to 818,345,456.72, 1,226,679,609.61 and 621,191,509.64

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Solution

The fourth proportional to 818,345,456.72, 1,226,679,609.61 and 621,191,509.64 is: 931,150,716.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    818,345,456.72 : 1,226,679,609.61 = 621,191,509.64 : x
  2. Step 2: Convert to fraction form
    818,345,456.72/1,226,679,609.61 = 621,191,509.64/x
  3. Step 3: Cross multiply
    818,345,456.72x = 1,226,679,609.61 × 621,191,509.64
  4. Step 4: Simplify right side
    818,345,456.72x = 762,002,958,538,241,664
  5. Step 5: Solve for x
    x = 762,002,958,538,241,664/818,345,456.72
  6. Step 6: Final answer
    x = 931,150,716.71

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.