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Finding the Fourth Proportional to 619,649.36, 854,634.02 and 448,210.43

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Solution

The fourth proportional to 619,649.36, 854,634.02 and 448,210.43 is: 618,181.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,649.36 : 854,634.02 = 448,210.43 : x
  2. Step 2: Convert to fraction form
    619,649.36/854,634.02 = 448,210.43/x
  3. Step 3: Cross multiply
    619,649.36x = 854,634.02 × 448,210.43
  4. Step 4: Simplify right side
    619,649.36x = 383,055,877,323.66
  5. Step 5: Solve for x
    x = 383,055,877,323.66/619,649.36
  6. Step 6: Final answer
    x = 618,181.68

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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.