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Finding the Fourth Proportional to 455,655.60, 682,936.65 and 313,500.60

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Solution

The fourth proportional to 455,655.60, 682,936.65 and 313,500.60 is: 469,874.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,655.60 : 682,936.65 = 313,500.60 : x
  2. Step 2: Convert to fraction form
    455,655.60/682,936.65 = 313,500.60/x
  3. Step 3: Cross multiply
    455,655.60x = 682,936.65 × 313,500.60
  4. Step 4: Simplify right side
    455,655.60x = 214,101,049,536.99
  5. Step 5: Solve for x
    x = 214,101,049,536.99/455,655.60
  6. Step 6: Final answer
    x = 469,874.72

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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.