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Finding the Fourth Proportional to 661,616.91, 913,133.25 and 375,076.17

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Solution

The fourth proportional to 661,616.91, 913,133.25 and 375,076.17 is: 517,662.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,616.91 : 913,133.25 = 375,076.17 : x
  2. Step 2: Convert to fraction form
    661,616.91/913,133.25 = 375,076.17/x
  3. Step 3: Cross multiply
    661,616.91x = 913,133.25 × 375,076.17
  4. Step 4: Simplify right side
    661,616.91x = 342,494,522,109.65
  5. Step 5: Solve for x
    x = 342,494,522,109.65/661,616.91
  6. Step 6: Final answer
    x = 517,662.89

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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.