Home / 420,820,472.78-580,750,187.32-235,181,483

Finding the Fourth Proportional to 420,820,472.78, 580,750,187.32 and 235,181,483

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Solution

The fourth proportional to 420,820,472.78, 580,750,187.32 and 235,181,483 is: 324,560,469.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,820,472.78 : 580,750,187.32 = 235,181,483 : x
  2. Step 2: Convert to fraction form
    420,820,472.78/580,750,187.32 = 235,181,483/x
  3. Step 3: Cross multiply
    420,820,472.78x = 580,750,187.32 × 235,181,483
  4. Step 4: Simplify right side
    420,820,472.78x = 136,581,690,306,445,408
  5. Step 5: Solve for x
    x = 136,581,690,306,445,408/420,820,472.78
  6. Step 6: Final answer
    x = 324,560,469.70

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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.