Home / 728,878.55-1,093,633.56-391,525.56

Finding the Fourth Proportional to 728,878.55, 1,093,633.56 and 391,525.56

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Solution

The fourth proportional to 728,878.55, 1,093,633.56 and 391,525.56 is: 587,457.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,878.55 : 1,093,633.56 = 391,525.56 : x
  2. Step 2: Convert to fraction form
    728,878.55/1,093,633.56 = 391,525.56/x
  3. Step 3: Cross multiply
    728,878.55x = 1,093,633.56 × 391,525.56
  4. Step 4: Simplify right side
    728,878.55x = 428,185,492,013.79
  5. Step 5: Solve for x
    x = 428,185,492,013.79/728,878.55
  6. Step 6: Final answer
    x = 587,457.94

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.