Home / 782,925,499.85-1,080,475,975.43-485,663,519.79

Finding the Fourth Proportional to 782,925,499.85, 1,080,475,975.43 and 485,663,519.79

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Solution

The fourth proportional to 782,925,499.85, 1,080,475,975.43 and 485,663,519.79 is: 670,239,716.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    782,925,499.85 : 1,080,475,975.43 = 485,663,519.79 : x
  2. Step 2: Convert to fraction form
    782,925,499.85/1,080,475,975.43 = 485,663,519.79/x
  3. Step 3: Cross multiply
    782,925,499.85x = 1,080,475,975.43 × 485,663,519.79
  4. Step 4: Simplify right side
    782,925,499.85x = 524,747,765,277,081,472
  5. Step 5: Solve for x
    x = 524,747,765,277,081,472/782,925,499.85
  6. Step 6: Final answer
    x = 670,239,716.78

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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.