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Finding the Fourth Proportional to 633,493.92, 873,521.10 and 403,687.20

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Solution

The fourth proportional to 633,493.92, 873,521.10 and 403,687.20 is: 556,641.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    633,493.92 : 873,521.10 = 403,687.20 : x
  2. Step 2: Convert to fraction form
    633,493.92/873,521.10 = 403,687.20/x
  3. Step 3: Cross multiply
    633,493.92x = 873,521.10 × 403,687.20
  4. Step 4: Simplify right side
    633,493.92x = 352,629,286,999.92
  5. Step 5: Solve for x
    x = 352,629,286,999.92/633,493.92
  6. Step 6: Final answer
    x = 556,641.94

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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.