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Finding the Fourth Proportional to 482,210.78, 665,316.47 and 379,919.33

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Solution

The fourth proportional to 482,210.78, 665,316.47 and 379,919.33 is: 524,182.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    482,210.78 : 665,316.47 = 379,919.33 : x
  2. Step 2: Convert to fraction form
    482,210.78/665,316.47 = 379,919.33/x
  3. Step 3: Cross multiply
    482,210.78x = 665,316.47 × 379,919.33
  4. Step 4: Simplify right side
    482,210.78x = 252,766,587,520.37
  5. Step 5: Solve for x
    x = 252,766,587,520.37/482,210.78
  6. Step 6: Final answer
    x = 524,182.78

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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.