Home / 821,960,615.56-1,232,940,899.51-379,172,288.50

Finding the Fourth Proportional to 821,960,615.56, 1,232,940,899.51 and 379,172,288.50

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Solution

The fourth proportional to 821,960,615.56, 1,232,940,899.51 and 379,172,288.50 is: 568,758,421.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,960,615.56 : 1,232,940,899.51 = 379,172,288.50 : x
  2. Step 2: Convert to fraction form
    821,960,615.56/1,232,940,899.51 = 379,172,288.50/x
  3. Step 3: Cross multiply
    821,960,615.56x = 1,232,940,899.51 × 379,172,288.50
  4. Step 4: Simplify right side
    821,960,615.56x = 467,497,022,450,320,832
  5. Step 5: Solve for x
    x = 467,497,022,450,320,832/821,960,615.56
  6. Step 6: Final answer
    x = 568,758,421.76

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1.5x scale

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.