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Finding the Fourth Proportional to 680,874.54, 939,599.19 and 374,944.74

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Solution

The fourth proportional to 680,874.54, 939,599.19 and 374,944.74 is: 517,419.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,874.54 : 939,599.19 = 374,944.74 : x
  2. Step 2: Convert to fraction form
    680,874.54/939,599.19 = 374,944.74/x
  3. Step 3: Cross multiply
    680,874.54x = 939,599.19 × 374,944.74
  4. Step 4: Simplify right side
    680,874.54x = 352,297,773,998.76
  5. Step 5: Solve for x
    x = 352,297,773,998.76/680,874.54
  6. Step 6: Final answer
    x = 517,419.51

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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.