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Finding the Fourth Proportional to 1,993,163.80, 2,989,745.70 and 730,827.40

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Solution

The fourth proportional to 1,993,163.80, 2,989,745.70 and 730,827.40 is: 1,096,241.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,993,163.80 : 2,989,745.70 = 730,827.40 : x
  2. Step 2: Convert to fraction form
    1,993,163.80/2,989,745.70 = 730,827.40/x
  3. Step 3: Cross multiply
    1,993,163.80x = 2,989,745.70 × 730,827.40
  4. Step 4: Simplify right side
    1,993,163.80x = 2,184,988,076,592.18
  5. Step 5: Solve for x
    x = 2,184,988,076,592.18/1,993,163.80
  6. Step 6: Final answer
    x = 1,096,241.10

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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.