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Finding the Fourth Proportional to 723,519.73, 998,489.50 and 401,208.18

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Solution

The fourth proportional to 723,519.73, 998,489.50 and 401,208.18 is: 553,685.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    723,519.73 : 998,489.50 = 401,208.18 : x
  2. Step 2: Convert to fraction form
    723,519.73/998,489.50 = 401,208.18/x
  3. Step 3: Cross multiply
    723,519.73x = 998,489.50 × 401,208.18
  4. Step 4: Simplify right side
    723,519.73x = 400,602,153,049.40
  5. Step 5: Solve for x
    x = 400,602,153,049.40/723,519.73
  6. Step 6: Final answer
    x = 553,685.18

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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.