Home / 521,457,618.70-782,280,906.45-262,019,932.30

Finding the Fourth Proportional to 521,457,618.70, 782,280,906.45 and 262,019,932.30

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Solution

The fourth proportional to 521,457,618.70, 782,280,906.45 and 262,019,932.30 is: 393,077,371.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,457,618.70 : 782,280,906.45 = 262,019,932.30 : x
  2. Step 2: Convert to fraction form
    521,457,618.70/782,280,906.45 = 262,019,932.30/x
  3. Step 3: Cross multiply
    521,457,618.70x = 782,280,906.45 × 262,019,932.30
  4. Step 4: Simplify right side
    521,457,618.70x = 204,973,190,147,611,648
  5. Step 5: Solve for x
    x = 204,973,190,147,611,648/521,457,618.70
  6. Step 6: Final answer
    x = 393,077,371.58

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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.