Home / 1,291,250.60-1,936,875.90-731,378.60

Finding the Fourth Proportional to 1,291,250.60, 1,936,875.90 and 731,378.60

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Solution

The fourth proportional to 1,291,250.60, 1,936,875.90 and 731,378.60 is: 1,097,067.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,291,250.60 : 1,936,875.90 = 731,378.60 : x
  2. Step 2: Convert to fraction form
    1,291,250.60/1,936,875.90 = 731,378.60/x
  3. Step 3: Cross multiply
    1,291,250.60x = 1,936,875.90 × 731,378.60
  4. Step 4: Simplify right side
    1,291,250.60x = 1,416,589,584,115.74
  5. Step 5: Solve for x
    x = 1,416,589,584,115.74/1,291,250.60
  6. Step 6: Final answer
    x = 1,097,067.90

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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.