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Finding the Fourth Proportional to 661,679.73, 992,618.01 and 306,729.63

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Solution

The fourth proportional to 661,679.73, 992,618.01 and 306,729.63 is: 460,140.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,679.73 : 992,618.01 = 306,729.63 : x
  2. Step 2: Convert to fraction form
    661,679.73/992,618.01 = 306,729.63/x
  3. Step 3: Cross multiply
    661,679.73x = 992,618.01 × 306,729.63
  4. Step 4: Simplify right side
    661,679.73x = 304,465,354,938.64
  5. Step 5: Solve for x
    x = 304,465,354,938.64/661,679.73
  6. Step 6: Final answer
    x = 460,140.07

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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.