Home / 648,910.20-973,365.30-383,189.70

Finding the Fourth Proportional to 648,910.20, 973,365.30 and 383,189.70

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Solution

The fourth proportional to 648,910.20, 973,365.30 and 383,189.70 is: 574,784.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,910.20 : 973,365.30 = 383,189.70 : x
  2. Step 2: Convert to fraction form
    648,910.20/973,365.30 = 383,189.70/x
  3. Step 3: Cross multiply
    648,910.20x = 973,365.30 × 383,189.70
  4. Step 4: Simplify right side
    648,910.20x = 372,983,557,297.41
  5. Step 5: Solve for x
    x = 372,983,557,297.41/648,910.20
  6. Step 6: Final answer
    x = 574,784.55

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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.