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Finding the Fourth Proportional to 455,836.40, 683,754.60 and 404,660.60

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Solution

The fourth proportional to 455,836.40, 683,754.60 and 404,660.60 is: 606,990.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,836.40 : 683,754.60 = 404,660.60 : x
  2. Step 2: Convert to fraction form
    455,836.40/683,754.60 = 404,660.60/x
  3. Step 3: Cross multiply
    455,836.40x = 683,754.60 × 404,660.60
  4. Step 4: Simplify right side
    455,836.40x = 276,688,546,688.76
  5. Step 5: Solve for x
    x = 276,688,546,688.76/455,836.40
  6. Step 6: Final answer
    x = 606,990.90

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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.