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Finding the Fourth Proportional to 676,768.50, 933,940.40 and 404,847.86

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Solution

The fourth proportional to 676,768.50, 933,940.40 and 404,847.86 is: 558,689.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    676,768.50 : 933,940.40 = 404,847.86 : x
  2. Step 2: Convert to fraction form
    676,768.50/933,940.40 = 404,847.86/x
  3. Step 3: Cross multiply
    676,768.50x = 933,940.40 × 404,847.86
  4. Step 4: Simplify right side
    676,768.50x = 378,103,772,307.54
  5. Step 5: Solve for x
    x = 378,103,772,307.54/676,768.50
  6. Step 6: Final answer
    x = 558,689.97

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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.