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Finding the Fourth Proportional to 448,983.67, 619,434.97 and 345,649.41

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Solution

The fourth proportional to 448,983.67, 619,434.97 and 345,649.41 is: 476,871.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,983.67 : 619,434.97 = 345,649.41 : x
  2. Step 2: Convert to fraction form
    448,983.67/619,434.97 = 345,649.41/x
  3. Step 3: Cross multiply
    448,983.67x = 619,434.97 × 345,649.41
  4. Step 4: Simplify right side
    448,983.67x = 214,107,331,913.87
  5. Step 5: Solve for x
    x = 214,107,331,913.87/448,983.67
  6. Step 6: Final answer
    x = 476,871.09

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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.