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Finding the Fourth Proportional to 2,158,894.08, 2,978,024.90 and 1,394,947.65

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Solution

The fourth proportional to 2,158,894.08, 2,978,024.90 and 1,394,947.65 is: 1,924,220.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,158,894.08 : 2,978,024.90 = 1,394,947.65 : x
  2. Step 2: Convert to fraction form
    2,158,894.08/2,978,024.90 = 1,394,947.65/x
  3. Step 3: Cross multiply
    2,158,894.08x = 2,978,024.90 × 1,394,947.65
  4. Step 4: Simplify right side
    2,158,894.08x = 4,154,188,828,921.75
  5. Step 5: Solve for x
    x = 4,154,188,828,921.75/2,158,894.08
  6. Step 6: Final answer
    x = 1,924,220.77

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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.