Home / 397,008,982.90-547,887,512.26-220,809,719.35

Finding the Fourth Proportional to 397,008,982.90, 547,887,512.26 and 220,809,719.35

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Solution

The fourth proportional to 397,008,982.90, 547,887,512.26 and 220,809,719.35 is: 304,725,819.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,008,982.90 : 547,887,512.26 = 220,809,719.35 : x
  2. Step 2: Convert to fraction form
    397,008,982.90/547,887,512.26 = 220,809,719.35/x
  3. Step 3: Cross multiply
    397,008,982.90x = 547,887,512.26 × 220,809,719.35
  4. Step 4: Simplify right side
    397,008,982.90x = 120,978,887,818,461,152
  5. Step 5: Solve for x
    x = 120,978,887,818,461,152/397,008,982.90
  6. Step 6: Final answer
    x = 304,725,819.89

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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.