Home / 2,990,579.20-4,486,905.60-1,308,889.60

Finding the Fourth Proportional to 2,990,579.20, 4,486,905.60 and 1,308,889.60

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Solution

The fourth proportional to 2,990,579.20, 4,486,905.60 and 1,308,889.60 is: 1,963,788.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,990,579.20 : 4,486,905.60 = 1,308,889.60 : x
  2. Step 2: Convert to fraction form
    2,990,579.20/4,486,905.60 = 1,308,889.60/x
  3. Step 3: Cross multiply
    2,990,579.20x = 4,486,905.60 × 1,308,889.60
  4. Step 4: Simplify right side
    2,990,579.20x = 5,872,864,076,021.76
  5. Step 5: Solve for x
    x = 5,872,864,076,021.76/2,990,579.20
  6. Step 6: Final answer
    x = 1,963,788.18

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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.