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Finding the Fourth Proportional to 680,288.22, 938,806.38 and 374,399.82

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Solution

The fourth proportional to 680,288.22, 938,806.38 and 374,399.82 is: 516,676.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,288.22 : 938,806.38 = 374,399.82 : x
  2. Step 2: Convert to fraction form
    680,288.22/938,806.38 = 374,399.82/x
  3. Step 3: Cross multiply
    680,288.22x = 938,806.38 × 374,399.82
  4. Step 4: Simplify right side
    680,288.22x = 351,488,939,686.85
  5. Step 5: Solve for x
    x = 351,488,939,686.85/680,288.22
  6. Step 6: Final answer
    x = 516,676.50

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1.5x scale

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.