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Finding the Fourth Proportional to 661,497.80, 992,505.90 and 262,070.60

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Solution

The fourth proportional to 661,497.80, 992,505.90 and 262,070.60 is: 393,208.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,497.80 : 992,505.90 = 262,070.60 : x
  2. Step 2: Convert to fraction form
    661,497.80/992,505.90 = 262,070.60/x
  3. Step 3: Cross multiply
    661,497.80x = 992,505.90 × 262,070.60
  4. Step 4: Simplify right side
    661,497.80x = 260,106,616,716.54
  5. Step 5: Solve for x
    x = 260,106,616,716.54/661,497.80
  6. Step 6: Final answer
    x = 393,208.59

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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.