Home / 2,078,978.40-3,120,994.80-1,320,818.40

Finding the Fourth Proportional to 2,078,978.40, 3,120,994.80 and 1,320,818.40

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Solution

The fourth proportional to 2,078,978.40, 3,120,994.80 and 1,320,818.40 is: 1,982,833.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,078,978.40 : 3,120,994.80 = 1,320,818.40 : x
  2. Step 2: Convert to fraction form
    2,078,978.40/3,120,994.80 = 1,320,818.40/x
  3. Step 3: Cross multiply
    2,078,978.40x = 3,120,994.80 × 1,320,818.40
  4. Step 4: Simplify right side
    2,078,978.40x = 4,122,267,358,144.32
  5. Step 5: Solve for x
    x = 4,122,267,358,144.32/2,078,978.40
  6. Step 6: Final answer
    x = 1,982,833.18

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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.