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Finding the Fourth Proportional to 622,642.40, 933,963.60 and 543,910.40

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Solution

The fourth proportional to 622,642.40, 933,963.60 and 543,910.40 is: 815,865.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    622,642.40 : 933,963.60 = 543,910.40 : x
  2. Step 2: Convert to fraction form
    622,642.40/933,963.60 = 543,910.40/x
  3. Step 3: Cross multiply
    622,642.40x = 933,963.60 × 543,910.40
  4. Step 4: Simplify right side
    622,642.40x = 507,992,515,261.44
  5. Step 5: Solve for x
    x = 507,992,515,261.44/622,642.40
  6. Step 6: Final answer
    x = 815,865.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.