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Finding the Fourth Proportional to 455,401.80, 681,873.90 and 455,401.80

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Solution

The fourth proportional to 455,401.80, 681,873.90 and 455,401.80 is: 681,873.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,401.80 : 681,873.90 = 455,401.80 : x
  2. Step 2: Convert to fraction form
    455,401.80/681,873.90 = 455,401.80/x
  3. Step 3: Cross multiply
    455,401.80x = 681,873.90 × 455,401.80
  4. Step 4: Simplify right side
    455,401.80x = 310,526,601,433.02
  5. Step 5: Solve for x
    x = 310,526,601,433.02/455,401.80
  6. Step 6: Final answer
    x = 681,873.90

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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.