Home / 820,009.20-1,230,186.60-346,450.80

Finding the Fourth Proportional to 820,009.20, 1,230,186.60 and 346,450.80

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Solution

The fourth proportional to 820,009.20, 1,230,186.60 and 346,450.80 is: 519,749.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,009.20 : 1,230,186.60 = 346,450.80 : x
  2. Step 2: Convert to fraction form
    820,009.20/1,230,186.60 = 346,450.80/x
  3. Step 3: Cross multiply
    820,009.20x = 1,230,186.60 × 346,450.80
  4. Step 4: Simplify right side
    820,009.20x = 426,199,131,719.28
  5. Step 5: Solve for x
    x = 426,199,131,719.28/820,009.20
  6. Step 6: Final answer
    x = 519,749.21

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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.