Home / 1,230,943.51-1,698,697.82-687,074.57

Finding the Fourth Proportional to 1,230,943.51, 1,698,697.82 and 687,074.57

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Solution

The fourth proportional to 1,230,943.51, 1,698,697.82 and 687,074.57 is: 948,160.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,230,943.51 : 1,698,697.82 = 687,074.57 : x
  2. Step 2: Convert to fraction form
    1,230,943.51/1,698,697.82 = 687,074.57/x
  3. Step 3: Cross multiply
    1,230,943.51x = 1,698,697.82 × 687,074.57
  4. Step 4: Simplify right side
    1,230,943.51x = 1,167,132,074,236.44
  5. Step 5: Solve for x
    x = 1,167,132,074,236.44/1,230,943.51
  6. Step 6: Final answer
    x = 948,160.55

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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.