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Finding the Fourth Proportional to 2,978,061.74, 4,109,808.12 and 1,671,394.85

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Solution

The fourth proportional to 2,978,061.74, 4,109,808.12 and 1,671,394.85 is: 2,306,571.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,978,061.74 : 4,109,808.12 = 1,671,394.85 : x
  2. Step 2: Convert to fraction form
    2,978,061.74/4,109,808.12 = 1,671,394.85/x
  3. Step 3: Cross multiply
    2,978,061.74x = 4,109,808.12 × 1,671,394.85
  4. Step 4: Simplify right side
    2,978,061.74x = 6,869,112,147,370.46
  5. Step 5: Solve for x
    x = 6,869,112,147,370.46/2,978,061.74
  6. Step 6: Final answer
    x = 2,306,571.43

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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.