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Finding the Fourth Proportional to 656,667.73, 906,162.40 and 381,004.23

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Solution

The fourth proportional to 656,667.73, 906,162.40 and 381,004.23 is: 525,763.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,667.73 : 906,162.40 = 381,004.23 : x
  2. Step 2: Convert to fraction form
    656,667.73/906,162.40 = 381,004.23/x
  3. Step 3: Cross multiply
    656,667.73x = 906,162.40 × 381,004.23
  4. Step 4: Simplify right side
    656,667.73x = 345,251,707,466.95
  5. Step 5: Solve for x
    x = 345,251,707,466.95/656,667.73
  6. Step 6: Final answer
    x = 525,763.17

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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.