Home / 1,621,321.60-2,431,982.40-439,369.60

Finding the Fourth Proportional to 1,621,321.60, 2,431,982.40 and 439,369.60

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Solution

The fourth proportional to 1,621,321.60, 2,431,982.40 and 439,369.60 is: 659,054.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,621,321.60 : 2,431,982.40 = 439,369.60 : x
  2. Step 2: Convert to fraction form
    1,621,321.60/2,431,982.40 = 439,369.60/x
  3. Step 3: Cross multiply
    1,621,321.60x = 2,431,982.40 × 439,369.60
  4. Step 4: Simplify right side
    1,621,321.60x = 1,068,539,134,295.04
  5. Step 5: Solve for x
    x = 1,068,539,134,295.04/1,621,321.60
  6. Step 6: Final answer
    x = 659,054.40

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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.