Home / 618,427.04-853,052.09-408,874.19

Finding the Fourth Proportional to 618,427.04, 853,052.09 and 408,874.19

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Solution

The fourth proportional to 618,427.04, 853,052.09 and 408,874.19 is: 563,996.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,427.04 : 853,052.09 = 408,874.19 : x
  2. Step 2: Convert to fraction form
    618,427.04/853,052.09 = 408,874.19/x
  3. Step 3: Cross multiply
    618,427.04x = 853,052.09 × 408,874.19
  4. Step 4: Simplify right side
    618,427.04x = 348,790,976,016.93
  5. Step 5: Solve for x
    x = 348,790,976,016.93/618,427.04
  6. Step 6: Final answer
    x = 563,996.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.