Home / 800,437.60-1,200,835.50-421,536.70

Finding the Fourth Proportional to 800,437.60, 1,200,835.50 and 421,536.70

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Solution

The fourth proportional to 800,437.60, 1,200,835.50 and 421,536.70 is: 632,399.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    800,437.60 : 1,200,835.50 = 421,536.70 : x
  2. Step 2: Convert to fraction form
    800,437.60/1,200,835.50 = 421,536.70/x
  3. Step 3: Cross multiply
    800,437.60x = 1,200,835.50 × 421,536.70
  4. Step 4: Simplify right side
    800,437.60x = 506,196,233,912.85
  5. Step 5: Solve for x
    x = 506,196,233,912.85/800,437.60
  6. Step 6: Final answer
    x = 632,399.37

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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.