Home / 820,021.20-1,230,204.60-346,462.80

Finding the Fourth Proportional to 820,021.20, 1,230,204.60 and 346,462.80

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Solution

The fourth proportional to 820,021.20, 1,230,204.60 and 346,462.80 is: 519,767.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,021.20 : 1,230,204.60 = 346,462.80 : x
  2. Step 2: Convert to fraction form
    820,021.20/1,230,204.60 = 346,462.80/x
  3. Step 3: Cross multiply
    820,021.20x = 1,230,204.60 × 346,462.80
  4. Step 4: Simplify right side
    820,021.20x = 426,220,130,288.88
  5. Step 5: Solve for x
    x = 426,220,130,288.88/820,021.20
  6. Step 6: Final answer
    x = 519,767.21

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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.