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Finding the Fourth Proportional to 716,092.29, 988,187.64 and 393,802.38

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Solution

The fourth proportional to 716,092.29, 988,187.64 and 393,802.38 is: 543,436.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    716,092.29 : 988,187.64 = 393,802.38 : x
  2. Step 2: Convert to fraction form
    716,092.29/988,187.64 = 393,802.38/x
  3. Step 3: Cross multiply
    716,092.29x = 988,187.64 × 393,802.38
  4. Step 4: Simplify right side
    716,092.29x = 389,150,644,518.58
  5. Step 5: Solve for x
    x = 389,150,644,518.58/716,092.29
  6. Step 6: Final answer
    x = 543,436.44

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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.