Home / 1,638,178.98-2,457,102.40-439,945.60

Finding the Fourth Proportional to 1,638,178.98, 2,457,102.40 and 439,945.60

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Solution

The fourth proportional to 1,638,178.98, 2,457,102.40 and 439,945.60 is: 659,873.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,638,178.98 : 2,457,102.40 = 439,945.60 : x
  2. Step 2: Convert to fraction form
    1,638,178.98/2,457,102.40 = 439,945.60/x
  3. Step 3: Cross multiply
    1,638,178.98x = 2,457,102.40 × 439,945.60
  4. Step 4: Simplify right side
    1,638,178.98x = 1,080,991,393,904.49
  5. Step 5: Solve for x
    x = 1,080,991,393,904.49/1,638,178.98
  6. Step 6: Final answer
    x = 659,873.80

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Double scale
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Similar ratio
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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.