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Finding the Fourth Proportional to 2,405,898.12, 3,609,652.80 and 786,741.60

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Solution

The fourth proportional to 2,405,898.12, 3,609,652.80 and 786,741.60 is: 1,180,375.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,405,898.12 : 3,609,652.80 = 786,741.60 : x
  2. Step 2: Convert to fraction form
    2,405,898.12/3,609,652.80 = 786,741.60/x
  3. Step 3: Cross multiply
    2,405,898.12x = 3,609,652.80 × 786,741.60
  4. Step 4: Simplify right side
    2,405,898.12x = 2,839,864,019,316.48
  5. Step 5: Solve for x
    x = 2,839,864,019,316.48/2,405,898.12
  6. Step 6: Final answer
    x = 1,180,375.84

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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.