Home / 1,640,687.20-2,459,864.40-629,418.40

Finding the Fourth Proportional to 1,640,687.20, 2,459,864.40 and 629,418.40

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Solution

The fourth proportional to 1,640,687.20, 2,459,864.40 and 629,418.40 is: 943,680.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,640,687.20 : 2,459,864.40 = 629,418.40 : x
  2. Step 2: Convert to fraction form
    1,640,687.20/2,459,864.40 = 629,418.40/x
  3. Step 3: Cross multiply
    1,640,687.20x = 2,459,864.40 × 629,418.40
  4. Step 4: Simplify right side
    1,640,687.20x = 1,548,283,914,864.96
  5. Step 5: Solve for x
    x = 1,548,283,914,864.96/1,640,687.20
  6. Step 6: Final answer
    x = 943,680.13

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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.