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Finding the Fourth Proportional to 663,441.05, 993,702.87 and 548,283.74

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Solution

The fourth proportional to 663,441.05, 993,702.87 and 548,283.74 is: 821,220.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,441.05 : 993,702.87 = 548,283.74 : x
  2. Step 2: Convert to fraction form
    663,441.05/993,702.87 = 548,283.74/x
  3. Step 3: Cross multiply
    663,441.05x = 993,702.87 × 548,283.74
  4. Step 4: Simplify right side
    663,441.05x = 544,831,126,012.33
  5. Step 5: Solve for x
    x = 544,831,126,012.33/663,441.05
  6. Step 6: Final answer
    x = 821,220.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.