Home / 685,957.65-1,028,936.48-647,466.45

Finding the Fourth Proportional to 685,957.65, 1,028,936.48 and 647,466.45

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Solution

The fourth proportional to 685,957.65, 1,028,936.48 and 647,466.45 is: 971,199.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,957.65 : 1,028,936.48 = 647,466.45 : x
  2. Step 2: Convert to fraction form
    685,957.65/1,028,936.48 = 647,466.45/x
  3. Step 3: Cross multiply
    685,957.65x = 1,028,936.48 × 647,466.45
  4. Step 4: Simplify right side
    685,957.65x = 666,201,846,743.76
  5. Step 5: Solve for x
    x = 666,201,846,743.76/685,957.65
  6. Step 6: Final answer
    x = 971,199.68

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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.