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Finding the Fourth Proportional to 527,808.45, 791,712.74 and 128,449.22

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Solution

The fourth proportional to 527,808.45, 791,712.74 and 128,449.22 is: 192,673.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    527,808.45 : 791,712.74 = 128,449.22 : x
  2. Step 2: Convert to fraction form
    527,808.45/791,712.74 = 128,449.22/x
  3. Step 3: Cross multiply
    527,808.45x = 791,712.74 × 128,449.22
  4. Step 4: Simplify right side
    527,808.45x = 101,694,879,637.38
  5. Step 5: Solve for x
    x = 101,694,879,637.38/527,808.45
  6. Step 6: Final answer
    x = 192,673.84

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.