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Finding the Fourth Proportional to 986,302.80, 1,479,344.85 and 808,499.70

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Solution

The fourth proportional to 986,302.80, 1,479,344.85 and 808,499.70 is: 1,212,659.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    986,302.80 : 1,479,344.85 = 808,499.70 : x
  2. Step 2: Convert to fraction form
    986,302.80/1,479,344.85 = 808,499.70/x
  3. Step 3: Cross multiply
    986,302.80x = 1,479,344.85 × 808,499.70
  4. Step 4: Simplify right side
    986,302.80x = 1,196,049,867,421.55
  5. Step 5: Solve for x
    x = 1,196,049,867,421.55/986,302.80
  6. Step 6: Final answer
    x = 1,212,659.91

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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.