Home / 857,000.33-1,285,513.18-324,378.35

Finding the Fourth Proportional to 857,000.33, 1,285,513.18 and 324,378.35

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Solution

The fourth proportional to 857,000.33, 1,285,513.18 and 324,378.35 is: 486,572.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    857,000.33 : 1,285,513.18 = 324,378.35 : x
  2. Step 2: Convert to fraction form
    857,000.33/1,285,513.18 = 324,378.35/x
  3. Step 3: Cross multiply
    857,000.33x = 1,285,513.18 × 324,378.35
  4. Step 4: Simplify right side
    857,000.33x = 416,992,636,993.14
  5. Step 5: Solve for x
    x = 416,992,636,993.14/857,000.33
  6. Step 6: Final answer
    x = 486,572.32

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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.