Home / 1,268,138.40-1,902,466.80-426,775.20

Finding the Fourth Proportional to 1,268,138.40, 1,902,466.80 and 426,775.20

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Solution

The fourth proportional to 1,268,138.40, 1,902,466.80 and 426,775.20 is: 640,250.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,268,138.40 : 1,902,466.80 = 426,775.20 : x
  2. Step 2: Convert to fraction form
    1,268,138.40/1,902,466.80 = 426,775.20/x
  3. Step 3: Cross multiply
    1,268,138.40x = 1,902,466.80 × 426,775.20
  4. Step 4: Simplify right side
    1,268,138.40x = 811,925,649,063.36
  5. Step 5: Solve for x
    x = 811,925,649,063.36/1,268,138.40
  6. Step 6: Final answer
    x = 640,250.03

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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.