Home / 1,989,166.40-2,976,751.20-1,821,204.80

Finding the Fourth Proportional to 1,989,166.40, 2,976,751.20 and 1,821,204.80

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Solution

The fourth proportional to 1,989,166.40, 2,976,751.20 and 1,821,204.80 is: 2,725,399.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,989,166.40 : 2,976,751.20 = 1,821,204.80 : x
  2. Step 2: Convert to fraction form
    1,989,166.40/2,976,751.20 = 1,821,204.80/x
  3. Step 3: Cross multiply
    1,989,166.40x = 2,976,751.20 × 1,821,204.80
  4. Step 4: Simplify right side
    1,989,166.40x = 5,421,273,573,845.76
  5. Step 5: Solve for x
    x = 5,421,273,573,845.76/1,989,166.40
  6. Step 6: Final answer
    x = 2,725,399.73

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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.