Home / 1,821,942.40-2,732,913.60-639,990.40

Finding the Fourth Proportional to 1,821,942.40, 2,732,913.60 and 639,990.40

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Solution

The fourth proportional to 1,821,942.40, 2,732,913.60 and 639,990.40 is: 959,985.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,821,942.40 : 2,732,913.60 = 639,990.40 : x
  2. Step 2: Convert to fraction form
    1,821,942.40/2,732,913.60 = 639,990.40/x
  3. Step 3: Cross multiply
    1,821,942.40x = 2,732,913.60 × 639,990.40
  4. Step 4: Simplify right side
    1,821,942.40x = 1,749,038,468,029.44
  5. Step 5: Solve for x
    x = 1,749,038,468,029.44/1,821,942.40
  6. Step 6: Final answer
    x = 959,985.60

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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.