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Finding the Fourth Proportional to 554,910.68, 765,779.37 and 313,203.44

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Solution

The fourth proportional to 554,910.68, 765,779.37 and 313,203.44 is: 432,222.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,910.68 : 765,779.37 = 313,203.44 : x
  2. Step 2: Convert to fraction form
    554,910.68/765,779.37 = 313,203.44/x
  3. Step 3: Cross multiply
    554,910.68x = 765,779.37 × 313,203.44
  4. Step 4: Simplify right side
    554,910.68x = 239,844,733,704.97
  5. Step 5: Solve for x
    x = 239,844,733,704.97/554,910.68
  6. Step 6: Final answer
    x = 432,222.23

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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.