Home / 1,221,408.24-1,686,416.93-814,469.50

Finding the Fourth Proportional to 1,221,408.24, 1,686,416.93 and 814,469.50

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Solution

The fourth proportional to 1,221,408.24, 1,686,416.93 and 814,469.50 is: 1,124,550.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,221,408.24 : 1,686,416.93 = 814,469.50 : x
  2. Step 2: Convert to fraction form
    1,221,408.24/1,686,416.93 = 814,469.50/x
  3. Step 3: Cross multiply
    1,221,408.24x = 1,686,416.93 × 814,469.50
  4. Step 4: Simplify right side
    1,221,408.24x = 1,373,535,153,768.64
  5. Step 5: Solve for x
    x = 1,373,535,153,768.64/1,221,408.24
  6. Step 6: Final answer
    x = 1,124,550.42

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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.