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Finding the Fourth Proportional to 661,792.50, 913,292.07 and 371,422.08

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Solution

The fourth proportional to 661,792.50, 913,292.07 and 371,422.08 is: 512,572.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,792.50 : 913,292.07 = 371,422.08 : x
  2. Step 2: Convert to fraction form
    661,792.50/913,292.07 = 371,422.08/x
  3. Step 3: Cross multiply
    661,792.50x = 913,292.07 × 371,422.08
  4. Step 4: Simplify right side
    661,792.50x = 339,216,840,286.91
  5. Step 5: Solve for x
    x = 339,216,840,286.91/661,792.50
  6. Step 6: Final answer
    x = 512,572.81

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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.