Home / 800,530.43-1,200,548.45-421,245.10

Finding the Fourth Proportional to 800,530.43, 1,200,548.45 and 421,245.10

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Solution

The fourth proportional to 800,530.43, 1,200,548.45 and 421,245.10 is: 631,737.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    800,530.43 : 1,200,548.45 = 421,245.10 : x
  2. Step 2: Convert to fraction form
    800,530.43/1,200,548.45 = 421,245.10/x
  3. Step 3: Cross multiply
    800,530.43x = 1,200,548.45 × 421,245.10
  4. Step 4: Simplify right side
    800,530.43x = 505,725,146,767.50
  5. Step 5: Solve for x
    x = 505,725,146,767.50/800,530.43
  6. Step 6: Final answer
    x = 631,737.57

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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.