Home / 859,197.40-1,288,310.10-326,735.80

Finding the Fourth Proportional to 859,197.40, 1,288,310.10 and 326,735.80

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Solution

The fourth proportional to 859,197.40, 1,288,310.10 and 326,735.80 is: 489,918.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    859,197.40 : 1,288,310.10 = 326,735.80 : x
  2. Step 2: Convert to fraction form
    859,197.40/1,288,310.10 = 326,735.80/x
  3. Step 3: Cross multiply
    859,197.40x = 1,288,310.10 × 326,735.80
  4. Step 4: Simplify right side
    859,197.40x = 420,937,031,171.58
  5. Step 5: Solve for x
    x = 420,937,031,171.58/859,197.40
  6. Step 6: Final answer
    x = 489,918.88

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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.