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Finding the Fourth Proportional to 2,158,894.46, 2,978,025.41 and 1,394,948.02

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Solution

The fourth proportional to 2,158,894.46, 2,978,025.41 and 1,394,948.02 is: 1,924,221.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,158,894.46 : 2,978,025.41 = 1,394,948.02 : x
  2. Step 2: Convert to fraction form
    2,158,894.46/2,978,025.41 = 1,394,948.02/x
  3. Step 3: Cross multiply
    2,158,894.46x = 2,978,025.41 × 1,394,948.02
  4. Step 4: Simplify right side
    2,158,894.46x = 4,154,190,649,189.19
  5. Step 5: Solve for x
    x = 4,154,190,649,189.19/2,158,894.46
  6. Step 6: Final answer
    x = 1,924,221.27

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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.