Home / 689,768,317.90-951,738,182.94-396,356,198.86

Finding the Fourth Proportional to 689,768,317.90, 951,738,182.94 and 396,356,198.86

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Solution

The fourth proportional to 689,768,317.90, 951,738,182.94 and 396,356,198.86 is: 546,889,903.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,768,317.90 : 951,738,182.94 = 396,356,198.86 : x
  2. Step 2: Convert to fraction form
    689,768,317.90/951,738,182.94 = 396,356,198.86/x
  3. Step 3: Cross multiply
    689,768,317.90x = 951,738,182.94 × 396,356,198.86
  4. Step 4: Simplify right side
    689,768,317.90x = 377,227,328,500,021,760
  5. Step 5: Solve for x
    x = 377,227,328,500,021,760/689,768,317.90
  6. Step 6: Final answer
    x = 546,889,903.05

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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.