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Finding the Fourth Proportional to 683,274.61, 942,918.97 and 396,813.15

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Solution

The fourth proportional to 683,274.61, 942,918.97 and 396,813.15 is: 547,602.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    683,274.61 : 942,918.97 = 396,813.15 : x
  2. Step 2: Convert to fraction form
    683,274.61/942,918.97 = 396,813.15/x
  3. Step 3: Cross multiply
    683,274.61x = 942,918.97 × 396,813.15
  4. Step 4: Simplify right side
    683,274.61x = 374,162,646,680.46
  5. Step 5: Solve for x
    x = 374,162,646,680.46/683,274.61
  6. Step 6: Final answer
    x = 547,602.15

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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.