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Finding the Fourth Proportional to 680,751.46, 939,429.26 and 374,821.61

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Solution

The fourth proportional to 680,751.46, 939,429.26 and 374,821.61 is: 517,249.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,751.46 : 939,429.26 = 374,821.61 : x
  2. Step 2: Convert to fraction form
    680,751.46/939,429.26 = 374,821.61/x
  3. Step 3: Cross multiply
    680,751.46x = 939,429.26 × 374,821.61
  4. Step 4: Simplify right side
    680,751.46x = 352,118,382,548.64
  5. Step 5: Solve for x
    x = 352,118,382,548.64/680,751.46
  6. Step 6: Final answer
    x = 517,249.54

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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.