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Finding the Fourth Proportional to 653,850.79, 902,389.69 and 381,986.64

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Solution

The fourth proportional to 653,850.79, 902,389.69 and 381,986.64 is: 527,185.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    653,850.79 : 902,389.69 = 381,986.64 : x
  2. Step 2: Convert to fraction form
    653,850.79/902,389.69 = 381,986.64/x
  3. Step 3: Cross multiply
    653,850.79x = 902,389.69 × 381,986.64
  4. Step 4: Simplify right side
    653,850.79x = 344,700,806,954.75
  5. Step 5: Solve for x
    x = 344,700,806,954.75/653,850.79
  6. Step 6: Final answer
    x = 527,185.73

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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.