Home / 1,385,408.83-1,912,182.94-812,633.53

Finding the Fourth Proportional to 1,385,408.83, 1,912,182.94 and 812,633.53

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Solution

The fourth proportional to 1,385,408.83, 1,912,182.94 and 812,633.53 is: 1,121,621.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,385,408.83 : 1,912,182.94 = 812,633.53 : x
  2. Step 2: Convert to fraction form
    1,385,408.83/1,912,182.94 = 812,633.53/x
  3. Step 3: Cross multiply
    1,385,408.83x = 1,912,182.94 × 812,633.53
  4. Step 4: Simplify right side
    1,385,408.83x = 1,553,903,972,896.62
  5. Step 5: Solve for x
    x = 1,553,903,972,896.62/1,385,408.83
  6. Step 6: Final answer
    x = 1,121,621.24

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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.