Home / 856,408.40-1,282,868.67-405,763.28

Finding the Fourth Proportional to 856,408.40, 1,282,868.67 and 405,763.28

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Solution

The fourth proportional to 856,408.40, 1,282,868.67 and 405,763.28 is: 607,818.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    856,408.40 : 1,282,868.67 = 405,763.28 : x
  2. Step 2: Convert to fraction form
    856,408.40/1,282,868.67 = 405,763.28/x
  3. Step 3: Cross multiply
    856,408.40x = 1,282,868.67 × 405,763.28
  4. Step 4: Simplify right side
    856,408.40x = 520,540,999,348.44
  5. Step 5: Solve for x
    x = 520,540,999,348.44/856,408.40
  6. Step 6: Final answer
    x = 607,818.65

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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.