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Finding the Fourth Proportional to 647,726.22, 893,863.76 and 361,264.86

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Solution

The fourth proportional to 647,726.22, 893,863.76 and 361,264.86 is: 498,546.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,726.22 : 893,863.76 = 361,264.86 : x
  2. Step 2: Convert to fraction form
    647,726.22/893,863.76 = 361,264.86/x
  3. Step 3: Cross multiply
    647,726.22x = 893,863.76 × 361,264.86
  4. Step 4: Simplify right side
    647,726.22x = 322,921,564,309.15
  5. Step 5: Solve for x
    x = 322,921,564,309.15/647,726.22
  6. Step 6: Final answer
    x = 498,546.38

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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.