Home / 1,214,390.40-1,818,086.40-1,088,419.20

Finding the Fourth Proportional to 1,214,390.40, 1,818,086.40 and 1,088,419.20

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Solution

The fourth proportional to 1,214,390.40, 1,818,086.40 and 1,088,419.20 is: 1,629,492.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,214,390.40 : 1,818,086.40 = 1,088,419.20 : x
  2. Step 2: Convert to fraction form
    1,214,390.40/1,818,086.40 = 1,088,419.20/x
  3. Step 3: Cross multiply
    1,214,390.40x = 1,818,086.40 × 1,088,419.20
  4. Step 4: Simplify right side
    1,214,390.40x = 1,978,840,145,018.88
  5. Step 5: Solve for x
    x = 1,978,840,145,018.88/1,214,390.40
  6. Step 6: Final answer
    x = 1,629,492.58

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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.