Home / 810,179.60-1,215,269.40-770,813.60

Finding the Fourth Proportional to 810,179.60, 1,215,269.40 and 770,813.60

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Solution

The fourth proportional to 810,179.60, 1,215,269.40 and 770,813.60 is: 1,156,220.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    810,179.60 : 1,215,269.40 = 770,813.60 : x
  2. Step 2: Convert to fraction form
    810,179.60/1,215,269.40 = 770,813.60/x
  3. Step 3: Cross multiply
    810,179.60x = 1,215,269.40 × 770,813.60
  4. Step 4: Simplify right side
    810,179.60x = 936,746,181,183.84
  5. Step 5: Solve for x
    x = 936,746,181,183.84/810,179.60
  6. Step 6: Final answer
    x = 1,156,220.40

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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.