Home / 1,268,129.40-1,902,453.30-426,766.20

Finding the Fourth Proportional to 1,268,129.40, 1,902,453.30 and 426,766.20

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Solution

The fourth proportional to 1,268,129.40, 1,902,453.30 and 426,766.20 is: 640,236.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,268,129.40 : 1,902,453.30 = 426,766.20 : x
  2. Step 2: Convert to fraction form
    1,268,129.40/1,902,453.30 = 426,766.20/x
  3. Step 3: Cross multiply
    1,268,129.40x = 1,902,453.30 × 426,766.20
  4. Step 4: Simplify right side
    1,268,129.40x = 811,902,765,518.46
  5. Step 5: Solve for x
    x = 811,902,765,518.46/1,268,129.40
  6. Step 6: Final answer
    x = 640,236.53

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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.