Home / 685,453.65-1,028,530.57-457,904.84

Finding the Fourth Proportional to 685,453.65, 1,028,530.57 and 457,904.84

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Solution

The fourth proportional to 685,453.65, 1,028,530.57 and 457,904.84 is: 687,091.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,453.65 : 1,028,530.57 = 457,904.84 : x
  2. Step 2: Convert to fraction form
    685,453.65/1,028,530.57 = 457,904.84/x
  3. Step 3: Cross multiply
    685,453.65x = 1,028,530.57 × 457,904.84
  4. Step 4: Simplify right side
    685,453.65x = 470,969,126,090.96
  5. Step 5: Solve for x
    x = 470,969,126,090.96/685,453.65
  6. Step 6: Final answer
    x = 687,091.13

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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.