Home / 685,962.90-1,028,944.35-212,793.30

Finding the Fourth Proportional to 685,962.90, 1,028,944.35 and 212,793.30

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Solution

The fourth proportional to 685,962.90, 1,028,944.35 and 212,793.30 is: 319,189.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,962.90 : 1,028,944.35 = 212,793.30 : x
  2. Step 2: Convert to fraction form
    685,962.90/1,028,944.35 = 212,793.30/x
  3. Step 3: Cross multiply
    685,962.90x = 1,028,944.35 × 212,793.30
  4. Step 4: Simplify right side
    685,962.90x = 218,952,463,752.86
  5. Step 5: Solve for x
    x = 218,952,463,752.86/685,962.90
  6. Step 6: Final answer
    x = 319,189.95

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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.