Home / 1,231,105.63-1,698,881.16-772,467.43

Finding the Fourth Proportional to 1,231,105.63, 1,698,881.16 and 772,467.43

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Solution

The fourth proportional to 1,231,105.63, 1,698,881.16 and 772,467.43 is: 1,065,977.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,231,105.63 : 1,698,881.16 = 772,467.43 : x
  2. Step 2: Convert to fraction form
    1,231,105.63/1,698,881.16 = 772,467.43/x
  3. Step 3: Cross multiply
    1,231,105.63x = 1,698,881.16 × 772,467.43
  4. Step 4: Simplify right side
    1,231,105.63x = 1,312,330,363,540.62
  5. Step 5: Solve for x
    x = 1,312,330,363,540.62/1,231,105.63
  6. Step 6: Final answer
    x = 1,065,977.06

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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.