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Finding the Fourth Proportional to 455,784.40, 683,676.60 and 329,813.20

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Solution

The fourth proportional to 455,784.40, 683,676.60 and 329,813.20 is: 494,719.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,784.40 : 683,676.60 = 329,813.20 : x
  2. Step 2: Convert to fraction form
    455,784.40/683,676.60 = 329,813.20/x
  3. Step 3: Cross multiply
    455,784.40x = 683,676.60 × 329,813.20
  4. Step 4: Simplify right side
    455,784.40x = 225,485,567,211.12
  5. Step 5: Solve for x
    x = 225,485,567,211.12/455,784.40
  6. Step 6: Final answer
    x = 494,719.80

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Similar ratio
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1.5x scale

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.