Home / 809,212.60-1,212,506.70-509,156.20

Finding the Fourth Proportional to 809,212.60, 1,212,506.70 and 509,156.20

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Solution

The fourth proportional to 809,212.60, 1,212,506.70 and 509,156.20 is: 762,908.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,212.60 : 1,212,506.70 = 509,156.20 : x
  2. Step 2: Convert to fraction form
    809,212.60/1,212,506.70 = 509,156.20/x
  3. Step 3: Cross multiply
    809,212.60x = 1,212,506.70 × 509,156.20
  4. Step 4: Simplify right side
    809,212.60x = 617,355,303,846.54
  5. Step 5: Solve for x
    x = 617,355,303,846.54/809,212.60
  6. Step 6: Final answer
    x = 762,908.66

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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.