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Finding the Fourth Proportional to 653,851.79, 902,391.07 and 381,987.64

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Solution

The fourth proportional to 653,851.79, 902,391.07 and 381,987.64 is: 527,187.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    653,851.79 : 902,391.07 = 381,987.64 : x
  2. Step 2: Convert to fraction form
    653,851.79/902,391.07 = 381,987.64/x
  3. Step 3: Cross multiply
    653,851.79x = 902,391.07 × 381,987.64
  4. Step 4: Simplify right side
    653,851.79x = 344,702,235,186.38
  5. Step 5: Solve for x
    x = 344,702,235,186.38/653,851.79
  6. Step 6: Final answer
    x = 527,187.11

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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.