Home / 988,873.60-1,483,310.40-420,107.80

Finding the Fourth Proportional to 988,873.60, 1,483,310.40 and 420,107.80

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Solution

The fourth proportional to 988,873.60, 1,483,310.40 and 420,107.80 is: 630,161.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    988,873.60 : 1,483,310.40 = 420,107.80 : x
  2. Step 2: Convert to fraction form
    988,873.60/1,483,310.40 = 420,107.80/x
  3. Step 3: Cross multiply
    988,873.60x = 1,483,310.40 × 420,107.80
  4. Step 4: Simplify right side
    988,873.60x = 623,150,268,861.12
  5. Step 5: Solve for x
    x = 623,150,268,861.12/988,873.60
  6. Step 6: Final answer
    x = 630,161.70

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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.