Home / 521,457,662.70-782,280,972.45-262,019,976.30

Finding the Fourth Proportional to 521,457,662.70, 782,280,972.45 and 262,019,976.30

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Solution

The fourth proportional to 521,457,662.70, 782,280,972.45 and 262,019,976.30 is: 393,077,437.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,457,662.70 : 782,280,972.45 = 262,019,976.30 : x
  2. Step 2: Convert to fraction form
    521,457,662.70/782,280,972.45 = 262,019,976.30/x
  3. Step 3: Cross multiply
    521,457,662.70x = 782,280,972.45 × 262,019,976.30
  4. Step 4: Simplify right side
    521,457,662.70x = 204,973,241,861,289,984
  5. Step 5: Solve for x
    x = 204,973,241,861,289,984/521,457,662.70
  6. Step 6: Final answer
    x = 393,077,437.58

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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.