Home / 820,411.80-1,230,609.60-259,446.30

Finding the Fourth Proportional to 820,411.80, 1,230,609.60 and 259,446.30

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Solution

The fourth proportional to 820,411.80, 1,230,609.60 and 259,446.30 is: 389,166.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,411.80 : 1,230,609.60 = 259,446.30 : x
  2. Step 2: Convert to fraction form
    820,411.80/1,230,609.60 = 259,446.30/x
  3. Step 3: Cross multiply
    820,411.80x = 1,230,609.60 × 259,446.30
  4. Step 4: Simplify right side
    820,411.80x = 319,277,107,464.48
  5. Step 5: Solve for x
    x = 319,277,107,464.48/820,411.80
  6. Step 6: Final answer
    x = 389,166.89

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1.5x scale

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.