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Finding the Fourth Proportional to 995,479.80, 1,493,438.40 and 321,446.40

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Solution

The fourth proportional to 995,479.80, 1,493,438.40 and 321,446.40 is: 482,240.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    995,479.80 : 1,493,438.40 = 321,446.40 : x
  2. Step 2: Convert to fraction form
    995,479.80/1,493,438.40 = 321,446.40/x
  3. Step 3: Cross multiply
    995,479.80x = 1,493,438.40 × 321,446.40
  4. Step 4: Simplify right side
    995,479.80x = 480,060,397,301.76
  5. Step 5: Solve for x
    x = 480,060,397,301.76/995,479.80
  6. Step 6: Final answer
    x = 482,240.22

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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.