Home / 1,989,620.40-2,984,430.60-1,233,793.20

Finding the Fourth Proportional to 1,989,620.40, 2,984,430.60 and 1,233,793.20

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Solution

The fourth proportional to 1,989,620.40, 2,984,430.60 and 1,233,793.20 is: 1,850,689.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,989,620.40 : 2,984,430.60 = 1,233,793.20 : x
  2. Step 2: Convert to fraction form
    1,989,620.40/2,984,430.60 = 1,233,793.20/x
  3. Step 3: Cross multiply
    1,989,620.40x = 2,984,430.60 × 1,233,793.20
  4. Step 4: Simplify right side
    1,989,620.40x = 3,682,170,180,151.92
  5. Step 5: Solve for x
    x = 3,682,170,180,151.92/1,989,620.40
  6. Step 6: Final answer
    x = 1,850,689.80

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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.