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Finding the Fourth Proportional to 661,979.98, 913,486.17 and 375,546.16

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Solution

The fourth proportional to 661,979.98, 913,486.17 and 375,546.16 is: 518,227.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,979.98 : 913,486.17 = 375,546.16 : x
  2. Step 2: Convert to fraction form
    661,979.98/913,486.17 = 375,546.16/x
  3. Step 3: Cross multiply
    661,979.98x = 913,486.17 × 375,546.16
  4. Step 4: Simplify right side
    661,979.98x = 343,056,223,356.61
  5. Step 5: Solve for x
    x = 343,056,223,356.61/661,979.98
  6. Step 6: Final answer
    x = 518,227.49

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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.