Home / 809,425.60-1,214,138.40-754,129.60

Finding the Fourth Proportional to 809,425.60, 1,214,138.40 and 754,129.60

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Solution

The fourth proportional to 809,425.60, 1,214,138.40 and 754,129.60 is: 1,131,194.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,425.60 : 1,214,138.40 = 754,129.60 : x
  2. Step 2: Convert to fraction form
    809,425.60/1,214,138.40 = 754,129.60/x
  3. Step 3: Cross multiply
    809,425.60x = 1,214,138.40 × 754,129.60
  4. Step 4: Simplify right side
    809,425.60x = 915,617,705,936.64
  5. Step 5: Solve for x
    x = 915,617,705,936.64/809,425.60
  6. Step 6: Final answer
    x = 1,131,194.40

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Double scale
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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.