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Finding the Fourth Proportional to 702,072.70, 968,859.22 and 379,781.80

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Solution

The fourth proportional to 702,072.70, 968,859.22 and 379,781.80 is: 524,098.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    702,072.70 : 968,859.22 = 379,781.80 : x
  2. Step 2: Convert to fraction form
    702,072.70/968,859.22 = 379,781.80/x
  3. Step 3: Cross multiply
    702,072.70x = 968,859.22 × 379,781.80
  4. Step 4: Simplify right side
    702,072.70x = 367,955,098,518.20
  5. Step 5: Solve for x
    x = 367,955,098,518.20/702,072.70
  6. Step 6: Final answer
    x = 524,098.29

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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.