Home / 1,089,078.40-1,635,367.20-823,139.20

Finding the Fourth Proportional to 1,089,078.40, 1,635,367.20 and 823,139.20

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Solution

The fourth proportional to 1,089,078.40, 1,635,367.20 and 823,139.20 is: 1,236,031.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,089,078.40 : 1,635,367.20 = 823,139.20 : x
  2. Step 2: Convert to fraction form
    1,089,078.40/1,635,367.20 = 823,139.20/x
  3. Step 3: Cross multiply
    1,089,078.40x = 1,635,367.20 × 823,139.20
  4. Step 4: Simplify right side
    1,089,078.40x = 1,346,134,848,714.24
  5. Step 5: Solve for x
    x = 1,346,134,848,714.24/1,089,078.40
  6. Step 6: Final answer
    x = 1,236,031.17

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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.