Home / 521,446,231.20-782,169,346.80-198,288,112.80

Finding the Fourth Proportional to 521,446,231.20, 782,169,346.80 and 198,288,112.80

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Solution

The fourth proportional to 521,446,231.20, 782,169,346.80 and 198,288,112.80 is: 297,432,169.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,446,231.20 : 782,169,346.80 = 198,288,112.80 : x
  2. Step 2: Convert to fraction form
    521,446,231.20/782,169,346.80 = 198,288,112.80/x
  3. Step 3: Cross multiply
    521,446,231.20x = 782,169,346.80 × 198,288,112.80
  4. Step 4: Simplify right side
    521,446,231.20x = 155,094,883,666,980,704
  5. Step 5: Solve for x
    x = 155,094,883,666,980,704/521,446,231.20
  6. Step 6: Final answer
    x = 297,432,169.20

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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.