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Finding the Fourth Proportional to 723,659.94, 998,644.14 and 401,370.66

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Solution

The fourth proportional to 723,659.94, 998,644.14 and 401,370.66 is: 553,887.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    723,659.94 : 998,644.14 = 401,370.66 : x
  2. Step 2: Convert to fraction form
    723,659.94/998,644.14 = 401,370.66/x
  3. Step 3: Cross multiply
    723,659.94x = 998,644.14 × 401,370.66
  4. Step 4: Simplify right side
    723,659.94x = 400,826,457,576.93
  5. Step 5: Solve for x
    x = 400,826,457,576.93/723,659.94
  6. Step 6: Final answer
    x = 553,887.86

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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.