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Finding the Fourth Proportional to 680,467.89, 939,038.25 and 374,537.71

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Solution

The fourth proportional to 680,467.89, 939,038.25 and 374,537.71 is: 516,857.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,467.89 : 939,038.25 = 374,537.71 : x
  2. Step 2: Convert to fraction form
    680,467.89/939,038.25 = 374,537.71/x
  3. Step 3: Cross multiply
    680,467.89x = 939,038.25 × 374,537.71
  4. Step 4: Simplify right side
    680,467.89x = 351,705,235,757.41
  5. Step 5: Solve for x
    x = 351,705,235,757.41/680,467.89
  6. Step 6: Final answer
    x = 516,857.95

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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.