Home / 637,941.60-956,912.40-427,816.80

Finding the Fourth Proportional to 637,941.60, 956,912.40 and 427,816.80

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Solution

The fourth proportional to 637,941.60, 956,912.40 and 427,816.80 is: 641,725.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    637,941.60 : 956,912.40 = 427,816.80 : x
  2. Step 2: Convert to fraction form
    637,941.60/956,912.40 = 427,816.80/x
  3. Step 3: Cross multiply
    637,941.60x = 956,912.40 × 427,816.80
  4. Step 4: Simplify right side
    637,941.60x = 409,383,200,848.32
  5. Step 5: Solve for x
    x = 409,383,200,848.32/637,941.60
  6. Step 6: Final answer
    x = 641,725.20

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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.