Home / 919,391.40-1,379,087.10-254,543.40

Finding the Fourth Proportional to 919,391.40, 1,379,087.10 and 254,543.40

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Solution

The fourth proportional to 919,391.40, 1,379,087.10 and 254,543.40 is: 381,815.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,391.40 : 1,379,087.10 = 254,543.40 : x
  2. Step 2: Convert to fraction form
    919,391.40/1,379,087.10 = 254,543.40/x
  3. Step 3: Cross multiply
    919,391.40x = 1,379,087.10 × 254,543.40
  4. Step 4: Simplify right side
    919,391.40x = 351,037,519,330.14
  5. Step 5: Solve for x
    x = 351,037,519,330.14/919,391.40
  6. Step 6: Final answer
    x = 381,815.10

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Double scale
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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.