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Finding the Fourth Proportional to 5,986,652.60, 8,978,010.60 and 2,199,643.40

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Solution

The fourth proportional to 5,986,652.60, 8,978,010.60 and 2,199,643.40 is: 3,298,741.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,986,652.60 : 8,978,010.60 = 2,199,643.40 : x
  2. Step 2: Convert to fraction form
    5,986,652.60/8,978,010.60 = 2,199,643.40/x
  3. Step 3: Cross multiply
    5,986,652.60x = 8,978,010.60 × 2,199,643.40
  4. Step 4: Simplify right side
    5,986,652.60x = 19,748,421,761,420.04
  5. Step 5: Solve for x
    x = 19,748,421,761,420.04/5,986,652.60
  6. Step 6: Final answer
    x = 3,298,741.90

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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.