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Finding the Fourth Proportional to 680,037.78, 938,439.06 and 374,096.28

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Solution

The fourth proportional to 680,037.78, 938,439.06 and 374,096.28 is: 516,245.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,037.78 : 938,439.06 = 374,096.28 : x
  2. Step 2: Convert to fraction form
    680,037.78/938,439.06 = 374,096.28/x
  3. Step 3: Cross multiply
    680,037.78x = 938,439.06 × 374,096.28
  4. Step 4: Simplify right side
    680,037.78x = 351,066,561,352.70
  5. Step 5: Solve for x
    x = 351,066,561,352.70/680,037.78
  6. Step 6: Final answer
    x = 516,245.67

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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.