Home / 786,715.20-1,180,072.80-225,806.40

Finding the Fourth Proportional to 786,715.20, 1,180,072.80 and 225,806.40

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Solution

The fourth proportional to 786,715.20, 1,180,072.80 and 225,806.40 is: 338,709.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    786,715.20 : 1,180,072.80 = 225,806.40 : x
  2. Step 2: Convert to fraction form
    786,715.20/1,180,072.80 = 225,806.40/x
  3. Step 3: Cross multiply
    786,715.20x = 1,180,072.80 × 225,806.40
  4. Step 4: Simplify right side
    786,715.20x = 266,467,990,705.92
  5. Step 5: Solve for x
    x = 266,467,990,705.92/786,715.20
  6. Step 6: Final answer
    x = 338,709.60

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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.