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Finding the Fourth Proportional to 505,367.27, 696,493.40 and 418,870.73

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Solution

The fourth proportional to 505,367.27, 696,493.40 and 418,870.73 is: 577,284.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,367.27 : 696,493.40 = 418,870.73 : x
  2. Step 2: Convert to fraction form
    505,367.27/696,493.40 = 418,870.73/x
  3. Step 3: Cross multiply
    505,367.27x = 696,493.40 × 418,870.73
  4. Step 4: Simplify right side
    505,367.27x = 291,740,696,462.89
  5. Step 5: Solve for x
    x = 291,740,696,462.89/505,367.27
  6. Step 6: Final answer
    x = 577,284.51

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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.