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Finding the Fourth Proportional to 646,996.95, 892,843.83 and 352,649.21

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Solution

The fourth proportional to 646,996.95, 892,843.83 and 352,649.21 is: 486,649.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,996.95 : 892,843.83 = 352,649.21 : x
  2. Step 2: Convert to fraction form
    646,996.95/892,843.83 = 352,649.21/x
  3. Step 3: Cross multiply
    646,996.95x = 892,843.83 × 352,649.21
  4. Step 4: Simplify right side
    646,996.95x = 314,860,671,302.87
  5. Step 5: Solve for x
    x = 314,860,671,302.87/646,996.95
  6. Step 6: Final answer
    x = 486,649.39

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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.