Home / 1,089,129.40-1,635,443.70-823,190.20

Finding the Fourth Proportional to 1,089,129.40, 1,635,443.70 and 823,190.20

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Solution

The fourth proportional to 1,089,129.40, 1,635,443.70 and 823,190.20 is: 1,236,107.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,089,129.40 : 1,635,443.70 = 823,190.20 : x
  2. Step 2: Convert to fraction form
    1,089,129.40/1,635,443.70 = 823,190.20/x
  3. Step 3: Cross multiply
    1,089,129.40x = 1,635,443.70 × 823,190.20
  4. Step 4: Simplify right side
    1,089,129.40x = 1,346,281,226,491.74
  5. Step 5: Solve for x
    x = 1,346,281,226,491.74/1,089,129.40
  6. Step 6: Final answer
    x = 1,236,107.69

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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.