Home / 685,307.28-1,028,029.78-235,968.69

Finding the Fourth Proportional to 685,307.28, 1,028,029.78 and 235,968.69

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Solution

The fourth proportional to 685,307.28, 1,028,029.78 and 235,968.69 is: 353,976.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,307.28 : 1,028,029.78 = 235,968.69 : x
  2. Step 2: Convert to fraction form
    685,307.28/1,028,029.78 = 235,968.69/x
  3. Step 3: Cross multiply
    685,307.28x = 1,028,029.78 × 235,968.69
  4. Step 4: Simplify right side
    685,307.28x = 242,582,844,617.66
  5. Step 5: Solve for x
    x = 242,582,844,617.66/685,307.28
  6. Step 6: Final answer
    x = 353,976.75

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Double scale
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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.