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Finding the Fourth Proportional to 661,661.48, 913,300.98 and 375,371.84

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Solution

The fourth proportional to 661,661.48, 913,300.98 and 375,371.84 is: 518,131.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,661.48 : 913,300.98 = 375,371.84 : x
  2. Step 2: Convert to fraction form
    661,661.48/913,300.98 = 375,371.84/x
  3. Step 3: Cross multiply
    661,661.48x = 913,300.98 × 375,371.84
  4. Step 4: Simplify right side
    661,661.48x = 342,827,469,336.40
  5. Step 5: Solve for x
    x = 342,827,469,336.40/661,661.48
  6. Step 6: Final answer
    x = 518,131.22

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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.