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Finding the Fourth Proportional to 409,275.79, 560,710.49 and 393,935.27

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Solution

The fourth proportional to 409,275.79, 560,710.49 and 393,935.27 is: 539,693.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    409,275.79 : 560,710.49 = 393,935.27 : x
  2. Step 2: Convert to fraction form
    409,275.79/560,710.49 = 393,935.27/x
  3. Step 3: Cross multiply
    409,275.79x = 560,710.49 × 393,935.27
  4. Step 4: Simplify right side
    409,275.79x = 220,883,633,496.75
  5. Step 5: Solve for x
    x = 220,883,633,496.75/409,275.79
  6. Step 6: Final answer
    x = 539,693.87

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.