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Finding the Fourth Proportional to 661,632.66, 913,154.99 and 375,091.92

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Solution

The fourth proportional to 661,632.66, 913,154.99 and 375,091.92 is: 517,684.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,632.66 : 913,154.99 = 375,091.92 : x
  2. Step 2: Convert to fraction form
    661,632.66/913,154.99 = 375,091.92/x
  3. Step 3: Cross multiply
    661,632.66x = 913,154.99 × 375,091.92
  4. Step 4: Simplify right side
    661,632.66x = 342,517,056,581.22
  5. Step 5: Solve for x
    x = 342,517,056,581.22/661,632.66
  6. Step 6: Final answer
    x = 517,684.63

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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.