Home / 780,850.40-1,170,469.20-425,112.80

Finding the Fourth Proportional to 780,850.40, 1,170,469.20 and 425,112.80

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Solution

The fourth proportional to 780,850.40, 1,170,469.20 and 425,112.80 is: 637,230.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,850.40 : 1,170,469.20 = 425,112.80 : x
  2. Step 2: Convert to fraction form
    780,850.40/1,170,469.20 = 425,112.80/x
  3. Step 3: Cross multiply
    780,850.40x = 1,170,469.20 × 425,112.80
  4. Step 4: Simplify right side
    780,850.40x = 497,581,438,925.76
  5. Step 5: Solve for x
    x = 497,581,438,925.76/780,850.40
  6. Step 6: Final answer
    x = 637,230.18

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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.