Home / 780,299.20-1,170,448.80-406,273.60

Finding the Fourth Proportional to 780,299.20, 1,170,448.80 and 406,273.60

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Solution

The fourth proportional to 780,299.20, 1,170,448.80 and 406,273.60 is: 609,410.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,299.20 : 1,170,448.80 = 406,273.60 : x
  2. Step 2: Convert to fraction form
    780,299.20/1,170,448.80 = 406,273.60/x
  3. Step 3: Cross multiply
    780,299.20x = 1,170,448.80 × 406,273.60
  4. Step 4: Simplify right side
    780,299.20x = 475,522,447,591.68
  5. Step 5: Solve for x
    x = 475,522,447,591.68/780,299.20
  6. Step 6: Final answer
    x = 609,410.40

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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.