Home / 819,631.62-1,229,666.31-258,676.74

Finding the Fourth Proportional to 819,631.62, 1,229,666.31 and 258,676.74

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Solution

The fourth proportional to 819,631.62, 1,229,666.31 and 258,676.74 is: 388,084.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,631.62 : 1,229,666.31 = 258,676.74 : x
  2. Step 2: Convert to fraction form
    819,631.62/1,229,666.31 = 258,676.74/x
  3. Step 3: Cross multiply
    819,631.62x = 1,229,666.31 × 258,676.74
  4. Step 4: Simplify right side
    819,631.62x = 318,086,072,358.63
  5. Step 5: Solve for x
    x = 318,086,072,358.63/819,631.62
  6. Step 6: Final answer
    x = 388,084.19

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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.