Home / 3,989,958.75-5,506,178.04-2,271,189.78

Finding the Fourth Proportional to 3,989,958.75, 5,506,178.04 and 2,271,189.78

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Solution

The fourth proportional to 3,989,958.75, 5,506,178.04 and 2,271,189.78 is: 3,134,261.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,989,958.75 : 5,506,178.04 = 2,271,189.78 : x
  2. Step 2: Convert to fraction form
    3,989,958.75/5,506,178.04 = 2,271,189.78/x
  3. Step 3: Cross multiply
    3,989,958.75x = 5,506,178.04 × 2,271,189.78
  4. Step 4: Simplify right side
    3,989,958.75x = 12,505,575,291,308.43
  5. Step 5: Solve for x
    x = 12,505,575,291,308.43/3,989,958.75
  6. Step 6: Final answer
    x = 3,134,261.80

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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.