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Finding the Fourth Proportional to 562,676.78, 774,858.08 and 489,056.90

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Solution

The fourth proportional to 562,676.78, 774,858.08 and 489,056.90 is: 673,476.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    562,676.78 : 774,858.08 = 489,056.90 : x
  2. Step 2: Convert to fraction form
    562,676.78/774,858.08 = 489,056.90/x
  3. Step 3: Cross multiply
    562,676.78x = 774,858.08 × 489,056.90
  4. Step 4: Simplify right side
    562,676.78x = 378,949,687,893.10
  5. Step 5: Solve for x
    x = 378,949,687,893.10/562,676.78
  6. Step 6: Final answer
    x = 673,476.67

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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.