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Finding the Fourth Proportional to 661,681.80, 992,930.94 and 306,629.64

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Solution

The fourth proportional to 661,681.80, 992,930.94 and 306,629.64 is: 460,133.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,681.80 : 992,930.94 = 306,629.64 : x
  2. Step 2: Convert to fraction form
    661,681.80/992,930.94 = 306,629.64/x
  3. Step 3: Cross multiply
    661,681.80x = 992,930.94 × 306,629.64
  4. Step 4: Simplify right side
    661,681.80x = 304,462,056,677.06
  5. Step 5: Solve for x
    x = 304,462,056,677.06/661,681.80
  6. Step 6: Final answer
    x = 460,133.64

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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.