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Finding the Fourth Proportional to 661,578.93, 992,696.31 and 262,210.86

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Solution

The fourth proportional to 661,578.93, 992,696.31 and 262,210.86 is: 393,446.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,578.93 : 992,696.31 = 262,210.86 : x
  2. Step 2: Convert to fraction form
    661,578.93/992,696.31 = 262,210.86/x
  3. Step 3: Cross multiply
    661,578.93x = 992,696.31 × 262,210.86
  4. Step 4: Simplify right side
    661,578.93x = 260,295,753,163.93
  5. Step 5: Solve for x
    x = 260,295,753,163.93/661,578.93
  6. Step 6: Final answer
    x = 393,446.26

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.