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Finding the Fourth Proportional to 699,819.68, 966,216 and 538,389.92

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Solution

The fourth proportional to 699,819.68, 966,216 and 538,389.92 is: 743,335.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    699,819.68 : 966,216 = 538,389.92 : x
  2. Step 2: Convert to fraction form
    699,819.68/966,216 = 538,389.92/x
  3. Step 3: Cross multiply
    699,819.68x = 966,216 × 538,389.92
  4. Step 4: Simplify right side
    699,819.68x = 520,200,954,942.72
  5. Step 5: Solve for x
    x = 520,200,954,942.72/699,819.68
  6. Step 6: Final answer
    x = 743,335.70

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1.5x scale

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.