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Finding the Fourth Proportional to 620,254.26, 855,726.93 and 351,826.74

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Solution

The fourth proportional to 620,254.26, 855,726.93 and 351,826.74 is: 485,393.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,254.26 : 855,726.93 = 351,826.74 : x
  2. Step 2: Convert to fraction form
    620,254.26/855,726.93 = 351,826.74/x
  3. Step 3: Cross multiply
    620,254.26x = 855,726.93 × 351,826.74
  4. Step 4: Simplify right side
    620,254.26x = 301,067,616,112.11
  5. Step 5: Solve for x
    x = 301,067,616,112.11/620,254.26
  6. Step 6: Final answer
    x = 485,393.87

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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.