Home / 820,302.21-1,230,644.67-280,562.67

Finding the Fourth Proportional to 820,302.21, 1,230,644.67 and 280,562.67

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Solution

The fourth proportional to 820,302.21, 1,230,644.67 and 280,562.67 is: 420,909.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,302.21 : 1,230,644.67 = 280,562.67 : x
  2. Step 2: Convert to fraction form
    820,302.21/1,230,644.67 = 280,562.67/x
  3. Step 3: Cross multiply
    820,302.21x = 1,230,644.67 × 280,562.67
  4. Step 4: Simplify right side
    820,302.21x = 345,272,954,436.47
  5. Step 5: Solve for x
    x = 345,272,954,436.47/820,302.21
  6. Step 6: Final answer
    x = 420,909.45

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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.