Home / 381,024,015.40-571,536,023.10-378,336,629.80

Finding the Fourth Proportional to 381,024,015.40, 571,536,023.10 and 378,336,629.80

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Solution

The fourth proportional to 381,024,015.40, 571,536,023.10 and 378,336,629.80 is: 567,504,944.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,024,015.40 : 571,536,023.10 = 378,336,629.80 : x
  2. Step 2: Convert to fraction form
    381,024,015.40/571,536,023.10 = 378,336,629.80/x
  3. Step 3: Cross multiply
    381,024,015.40x = 571,536,023.10 × 378,336,629.80
  4. Step 4: Simplify right side
    381,024,015.40x = 216,233,012,788,948,960
  5. Step 5: Solve for x
    x = 216,233,012,788,948,960/381,024,015.40
  6. Step 6: Final answer
    x = 567,504,944.70

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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.