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Finding the Fourth Proportional to 739,293, 1,020,223.62 and 399,760.44

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Solution

The fourth proportional to 739,293, 1,020,223.62 and 399,760.44 is: 551,669.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    739,293 : 1,020,223.62 = 399,760.44 : x
  2. Step 2: Convert to fraction form
    739,293/1,020,223.62 = 399,760.44/x
  3. Step 3: Cross multiply
    739,293x = 1,020,223.62 × 399,760.44
  4. Step 4: Simplify right side
    739,293x = 407,845,043,229.59
  5. Step 5: Solve for x
    x = 407,845,043,229.59/739,293
  6. Step 6: Final answer
    x = 551,669.02

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.