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Finding the Fourth Proportional to 657,476.56, 985,391.57 and 353,122.79

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Solution

The fourth proportional to 657,476.56, 985,391.57 and 353,122.79 is: 529,242.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,476.56 : 985,391.57 = 353,122.79 : x
  2. Step 2: Convert to fraction form
    657,476.56/985,391.57 = 353,122.79/x
  3. Step 3: Cross multiply
    657,476.56x = 985,391.57 × 353,122.79
  4. Step 4: Simplify right side
    657,476.56x = 347,964,215,513.92
  5. Step 5: Solve for x
    x = 347,964,215,513.92/657,476.56
  6. Step 6: Final answer
    x = 529,242.01

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.