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Finding the Fourth Proportional to 661,696.80, 992,804.40 and 262,269.60

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Solution

The fourth proportional to 661,696.80, 992,804.40 and 262,269.60 is: 393,507.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,696.80 : 992,804.40 = 262,269.60 : x
  2. Step 2: Convert to fraction form
    661,696.80/992,804.40 = 262,269.60/x
  3. Step 3: Cross multiply
    661,696.80x = 992,804.40 × 262,269.60
  4. Step 4: Simplify right side
    661,696.80x = 260,382,412,866.24
  5. Step 5: Solve for x
    x = 260,382,412,866.24/661,696.80
  6. Step 6: Final answer
    x = 393,507.14

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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.