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Finding the Fourth Proportional to 680,644.22, 939,271.85 and 374,717.54

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Solution

The fourth proportional to 680,644.22, 939,271.85 and 374,717.54 is: 517,100.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,644.22 : 939,271.85 = 374,717.54 : x
  2. Step 2: Convert to fraction form
    680,644.22/939,271.85 = 374,717.54/x
  3. Step 3: Cross multiply
    680,644.22x = 939,271.85 × 374,717.54
  4. Step 4: Simplify right side
    680,644.22x = 351,961,638,903.03
  5. Step 5: Solve for x
    x = 351,961,638,903.03/680,644.22
  6. Step 6: Final answer
    x = 517,100.76

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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.