Home / 521,942.80-782,914.20-272,592.40

Finding the Fourth Proportional to 521,942.80, 782,914.20 and 272,592.40

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Solution

The fourth proportional to 521,942.80, 782,914.20 and 272,592.40 is: 408,888.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,942.80 : 782,914.20 = 272,592.40 : x
  2. Step 2: Convert to fraction form
    521,942.80/782,914.20 = 272,592.40/x
  3. Step 3: Cross multiply
    521,942.80x = 782,914.20 × 272,592.40
  4. Step 4: Simplify right side
    521,942.80x = 213,416,460,772.08
  5. Step 5: Solve for x
    x = 213,416,460,772.08/521,942.80
  6. Step 6: Final answer
    x = 408,888.60

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Similar ratio
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1.5x scale

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.