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Finding the Fourth Proportional to 661,540.68, 913,185.78 and 468,955.02

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Solution

The fourth proportional to 661,540.68, 913,185.78 and 468,955.02 is: 647,341.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,540.68 : 913,185.78 = 468,955.02 : x
  2. Step 2: Convert to fraction form
    661,540.68/913,185.78 = 468,955.02/x
  3. Step 3: Cross multiply
    661,540.68x = 913,185.78 × 468,955.02
  4. Step 4: Simplify right side
    661,540.68x = 428,243,055,723.62
  5. Step 5: Solve for x
    x = 428,243,055,723.62/661,540.68
  6. Step 6: Final answer
    x = 647,341.98

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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.