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Finding the Fourth Proportional to 661,865.36, 992,896.46 and 306,915.26

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Solution

The fourth proportional to 661,865.36, 992,896.46 and 306,915.26 is: 460,418.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,865.36 : 992,896.46 = 306,915.26 : x
  2. Step 2: Convert to fraction form
    661,865.36/992,896.46 = 306,915.26/x
  3. Step 3: Cross multiply
    661,865.36x = 992,896.46 × 306,915.26
  4. Step 4: Simplify right side
    661,865.36x = 304,735,068,674.92
  5. Step 5: Solve for x
    x = 304,735,068,674.92/661,865.36
  6. Step 6: Final answer
    x = 460,418.52

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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.