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Finding the Fourth Proportional to 661,127.60, 991,109.93 and 262,048.57

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Solution

The fourth proportional to 661,127.60, 991,109.93 and 262,048.57 is: 392,842.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,127.60 : 991,109.93 = 262,048.57 : x
  2. Step 2: Convert to fraction form
    661,127.60/991,109.93 = 262,048.57/x
  3. Step 3: Cross multiply
    661,127.60x = 991,109.93 × 262,048.57
  4. Step 4: Simplify right side
    661,127.60x = 259,718,936,081.28
  5. Step 5: Solve for x
    x = 259,718,936,081.28/661,127.60
  6. Step 6: Final answer
    x = 392,842.37

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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.