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Finding the Fourth Proportional to 680,131.44, 938,588.58 and 374,211.86

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Solution

The fourth proportional to 680,131.44, 938,588.58 and 374,211.86 is: 516,416.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,131.44 : 938,588.58 = 374,211.86 : x
  2. Step 2: Convert to fraction form
    680,131.44/938,588.58 = 374,211.86/x
  3. Step 3: Cross multiply
    680,131.44x = 938,588.58 × 374,211.86
  4. Step 4: Simplify right side
    680,131.44x = 351,230,973,603.62
  5. Step 5: Solve for x
    x = 351,230,973,603.62/680,131.44
  6. Step 6: Final answer
    x = 516,416.32

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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.