Home / 1,370,138.20-2,055,207.30-1,315,025.80

Finding the Fourth Proportional to 1,370,138.20, 2,055,207.30 and 1,315,025.80

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Solution

The fourth proportional to 1,370,138.20, 2,055,207.30 and 1,315,025.80 is: 1,972,538.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,370,138.20 : 2,055,207.30 = 1,315,025.80 : x
  2. Step 2: Convert to fraction form
    1,370,138.20/2,055,207.30 = 1,315,025.80/x
  3. Step 3: Cross multiply
    1,370,138.20x = 2,055,207.30 × 1,315,025.80
  4. Step 4: Simplify right side
    1,370,138.20x = 2,702,650,623,848.34
  5. Step 5: Solve for x
    x = 2,702,650,623,848.34/1,370,138.20
  6. Step 6: Final answer
    x = 1,972,538.70

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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.