Home / 557,083,469.70-768,782,154.51-306,215,251.20

Finding the Fourth Proportional to 557,083,469.70, 768,782,154.51 and 306,215,251.20

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Solution

The fourth proportional to 557,083,469.70, 768,782,154.51 and 306,215,251.20 is: 422,580,875.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,083,469.70 : 768,782,154.51 = 306,215,251.20 : x
  2. Step 2: Convert to fraction form
    557,083,469.70/768,782,154.51 = 306,215,251.20/x
  3. Step 3: Cross multiply
    557,083,469.70x = 768,782,154.51 × 306,215,251.20
  4. Step 4: Simplify right side
    557,083,469.70x = 235,412,820,561,356,864
  5. Step 5: Solve for x
    x = 235,412,820,561,356,864/557,083,469.70
  6. Step 6: Final answer
    x = 422,580,875.88

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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.