Home / 1,378,190.40-2,063,786.40-1,315,204.80

Finding the Fourth Proportional to 1,378,190.40, 2,063,786.40 and 1,315,204.80

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Solution

The fourth proportional to 1,378,190.40, 2,063,786.40 and 1,315,204.80 is: 1,969,467.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,378,190.40 : 2,063,786.40 = 1,315,204.80 : x
  2. Step 2: Convert to fraction form
    1,378,190.40/2,063,786.40 = 1,315,204.80/x
  3. Step 3: Cross multiply
    1,378,190.40x = 2,063,786.40 × 1,315,204.80
  4. Step 4: Simplify right side
    1,378,190.40x = 2,714,301,779,454.72
  5. Step 5: Solve for x
    x = 2,714,301,779,454.72/1,378,190.40
  6. Step 6: Final answer
    x = 1,969,467.92

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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.