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Finding the Fourth Proportional to 2,965,739.60, 4,448,609.40 and 721,877.60

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Solution

The fourth proportional to 2,965,739.60, 4,448,609.40 and 721,877.60 is: 1,082,816.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,965,739.60 : 4,448,609.40 = 721,877.60 : x
  2. Step 2: Convert to fraction form
    2,965,739.60/4,448,609.40 = 721,877.60/x
  3. Step 3: Cross multiply
    2,965,739.60x = 4,448,609.40 × 721,877.60
  4. Step 4: Simplify right side
    2,965,739.60x = 3,211,351,477,009.44
  5. Step 5: Solve for x
    x = 3,211,351,477,009.44/2,965,739.60
  6. Step 6: Final answer
    x = 1,082,816.40

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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.