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Finding the Fourth Proportional to 987,291.63, 1,480,994.87 and 277,375.03

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Solution

The fourth proportional to 987,291.63, 1,480,994.87 and 277,375.03 is: 416,078.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    987,291.63 : 1,480,994.87 = 277,375.03 : x
  2. Step 2: Convert to fraction form
    987,291.63/1,480,994.87 = 277,375.03/x
  3. Step 3: Cross multiply
    987,291.63x = 1,480,994.87 × 277,375.03
  4. Step 4: Simplify right side
    987,291.63x = 410,790,991,406.73
  5. Step 5: Solve for x
    x = 410,790,991,406.73/987,291.63
  6. Step 6: Final answer
    x = 416,078.67

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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.