Home / 521,448,126.70-782,172,190.05-262,563,313.90

Finding the Fourth Proportional to 521,448,126.70, 782,172,190.05 and 262,563,313.90

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Solution

The fourth proportional to 521,448,126.70, 782,172,190.05 and 262,563,313.90 is: 393,844,970.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,448,126.70 : 782,172,190.05 = 262,563,313.90 : x
  2. Step 2: Convert to fraction form
    521,448,126.70/782,172,190.05 = 262,563,313.90/x
  3. Step 3: Cross multiply
    521,448,126.70x = 782,172,190.05 × 262,563,313.90
  4. Step 4: Simplify right side
    521,448,126.70x = 205,369,722,259,948,608
  5. Step 5: Solve for x
    x = 205,369,722,259,948,608/521,448,126.70
  6. Step 6: Final answer
    x = 393,844,970.85

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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.