Home / 1,276,021.92-1,759,682.16-839,658.72

Finding the Fourth Proportional to 1,276,021.92, 1,759,682.16 and 839,658.72

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Solution

The fourth proportional to 1,276,021.92, 1,759,682.16 and 839,658.72 is: 1,157,920.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,276,021.92 : 1,759,682.16 = 839,658.72 : x
  2. Step 2: Convert to fraction form
    1,276,021.92/1,759,682.16 = 839,658.72/x
  3. Step 3: Cross multiply
    1,276,021.92x = 1,759,682.16 × 839,658.72
  4. Step 4: Simplify right side
    1,276,021.92x = 1,477,532,470,072.44
  5. Step 5: Solve for x
    x = 1,477,532,470,072.44/1,276,021.92
  6. Step 6: Final answer
    x = 1,157,920.92

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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.