Home / 1,235,912.80-1,853,869.20-487,861.60

Finding the Fourth Proportional to 1,235,912.80, 1,853,869.20 and 487,861.60

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Solution

The fourth proportional to 1,235,912.80, 1,853,869.20 and 487,861.60 is: 731,792.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,235,912.80 : 1,853,869.20 = 487,861.60 : x
  2. Step 2: Convert to fraction form
    1,235,912.80/1,853,869.20 = 487,861.60/x
  3. Step 3: Cross multiply
    1,235,912.80x = 1,853,869.20 × 487,861.60
  4. Step 4: Simplify right side
    1,235,912.80x = 904,431,594,102.72
  5. Step 5: Solve for x
    x = 904,431,594,102.72/1,235,912.80
  6. Step 6: Final answer
    x = 731,792.40

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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.