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Finding the Fourth Proportional to 633,403.61, 874,111.14 and 361,466.09

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Solution

The fourth proportional to 633,403.61, 874,111.14 and 361,466.09 is: 498,831.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    633,403.61 : 874,111.14 = 361,466.09 : x
  2. Step 2: Convert to fraction form
    633,403.61/874,111.14 = 361,466.09/x
  3. Step 3: Cross multiply
    633,403.61x = 874,111.14 × 361,466.09
  4. Step 4: Simplify right side
    633,403.61x = 315,961,531,630.69
  5. Step 5: Solve for x
    x = 315,961,531,630.69/633,403.61
  6. Step 6: Final answer
    x = 498,831.28

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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.