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Finding the Fourth Proportional to 632,379, 872,967.60 and 403,243.44

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Solution

The fourth proportional to 632,379, 872,967.60 and 403,243.44 is: 556,657.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    632,379 : 872,967.60 = 403,243.44 : x
  2. Step 2: Convert to fraction form
    632,379/872,967.60 = 403,243.44/x
  3. Step 3: Cross multiply
    632,379x = 872,967.60 × 403,243.44
  4. Step 4: Simplify right side
    632,379x = 352,018,458,032.54
  5. Step 5: Solve for x
    x = 352,018,458,032.54/632,379
  6. Step 6: Final answer
    x = 556,657.41

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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.