Home / 2,989,657.80-4,484,486.70-1,979,919.90

Finding the Fourth Proportional to 2,989,657.80, 4,484,486.70 and 1,979,919.90

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Solution

The fourth proportional to 2,989,657.80, 4,484,486.70 and 1,979,919.90 is: 2,969,879.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,989,657.80 : 4,484,486.70 = 1,979,919.90 : x
  2. Step 2: Convert to fraction form
    2,989,657.80/4,484,486.70 = 1,979,919.90/x
  3. Step 3: Cross multiply
    2,989,657.80x = 4,484,486.70 × 1,979,919.90
  4. Step 4: Simplify right side
    2,989,657.80x = 8,878,924,458,615.33
  5. Step 5: Solve for x
    x = 8,878,924,458,615.33/2,989,657.80
  6. Step 6: Final answer
    x = 2,969,879.85

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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.