Home / 1,295,138.70-1,942,708.05-1,089,852.30

Finding the Fourth Proportional to 1,295,138.70, 1,942,708.05 and 1,089,852.30

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Solution

The fourth proportional to 1,295,138.70, 1,942,708.05 and 1,089,852.30 is: 1,634,778.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,295,138.70 : 1,942,708.05 = 1,089,852.30 : x
  2. Step 2: Convert to fraction form
    1,295,138.70/1,942,708.05 = 1,089,852.30/x
  3. Step 3: Cross multiply
    1,295,138.70x = 1,942,708.05 × 1,089,852.30
  4. Step 4: Simplify right side
    1,295,138.70x = 2,117,264,836,521.02
  5. Step 5: Solve for x
    x = 2,117,264,836,521.02/1,295,138.70
  6. Step 6: Final answer
    x = 1,634,778.45

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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.