Home / 685,415.04-1,028,122.56-186,852.48

Finding the Fourth Proportional to 685,415.04, 1,028,122.56 and 186,852.48

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Solution

The fourth proportional to 685,415.04, 1,028,122.56 and 186,852.48 is: 280,278.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,415.04 : 1,028,122.56 = 186,852.48 : x
  2. Step 2: Convert to fraction form
    685,415.04/1,028,122.56 = 186,852.48/x
  3. Step 3: Cross multiply
    685,415.04x = 1,028,122.56 × 186,852.48
  4. Step 4: Simplify right side
    685,415.04x = 192,107,250,079.95
  5. Step 5: Solve for x
    x = 192,107,250,079.95/685,415.04
  6. Step 6: Final answer
    x = 280,278.72

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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.