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Finding the Fourth Proportional to 425,860.92, 638,039.70 and 379,525.68

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Solution

The fourth proportional to 425,860.92, 638,039.70 and 379,525.68 is: 568,618.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,860.92 : 638,039.70 = 379,525.68 : x
  2. Step 2: Convert to fraction form
    425,860.92/638,039.70 = 379,525.68/x
  3. Step 3: Cross multiply
    425,860.92x = 638,039.70 × 379,525.68
  4. Step 4: Simplify right side
    425,860.92x = 242,152,451,009.50
  5. Step 5: Solve for x
    x = 242,152,451,009.50/425,860.92
  6. Step 6: Final answer
    x = 568,618.63

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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.