Home / 1,393,286.40-2,089,929.60-889,401.60

Finding the Fourth Proportional to 1,393,286.40, 2,089,929.60 and 889,401.60

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Solution

The fourth proportional to 1,393,286.40, 2,089,929.60 and 889,401.60 is: 1,334,102.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,393,286.40 : 2,089,929.60 = 889,401.60 : x
  2. Step 2: Convert to fraction form
    1,393,286.40/2,089,929.60 = 889,401.60/x
  3. Step 3: Cross multiply
    1,393,286.40x = 2,089,929.60 × 889,401.60
  4. Step 4: Simplify right side
    1,393,286.40x = 1,858,786,730,127.36
  5. Step 5: Solve for x
    x = 1,858,786,730,127.36/1,393,286.40
  6. Step 6: Final answer
    x = 1,334,102.40

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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.