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Finding the Fourth Proportional to 455,059.60, 683,901.60 and 397,322.80

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Solution

The fourth proportional to 455,059.60, 683,901.60 and 397,322.80 is: 597,129.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,059.60 : 683,901.60 = 397,322.80 : x
  2. Step 2: Convert to fraction form
    455,059.60/683,901.60 = 397,322.80/x
  3. Step 3: Cross multiply
    455,059.60x = 683,901.60 × 397,322.80
  4. Step 4: Simplify right side
    455,059.60x = 271,729,698,636.48
  5. Step 5: Solve for x
    x = 271,729,698,636.48/455,059.60
  6. Step 6: Final answer
    x = 597,129.91

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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.