Home / 521,108,157.12-781,687,375.32-171,346,481.57

Finding the Fourth Proportional to 521,108,157.12, 781,687,375.32 and 171,346,481.57

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Solution

The fourth proportional to 521,108,157.12, 781,687,375.32 and 171,346,481.57 is: 257,027,988.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,108,157.12 : 781,687,375.32 = 171,346,481.57 : x
  2. Step 2: Convert to fraction form
    521,108,157.12/781,687,375.32 = 171,346,481.57/x
  3. Step 3: Cross multiply
    521,108,157.12x = 781,687,375.32 × 171,346,481.57
  4. Step 4: Simplify right side
    521,108,157.12x = 133,939,381,444,861,616
  5. Step 5: Solve for x
    x = 133,939,381,444,861,616/521,108,157.12
  6. Step 6: Final answer
    x = 257,027,988.56

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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.