Home / 785,120.60-1,177,680.90-727,383.80

Finding the Fourth Proportional to 785,120.60, 1,177,680.90 and 727,383.80

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Solution

The fourth proportional to 785,120.60, 1,177,680.90 and 727,383.80 is: 1,091,075.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    785,120.60 : 1,177,680.90 = 727,383.80 : x
  2. Step 2: Convert to fraction form
    785,120.60/1,177,680.90 = 727,383.80/x
  3. Step 3: Cross multiply
    785,120.60x = 1,177,680.90 × 727,383.80
  4. Step 4: Simplify right side
    785,120.60x = 856,626,008,229.42
  5. Step 5: Solve for x
    x = 856,626,008,229.42/785,120.60
  6. Step 6: Final answer
    x = 1,091,075.70

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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.