Home / 451,112.47-622,456.09-257,431.75

Finding the Fourth Proportional to 451,112.47, 622,456.09 and 257,431.75

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Solution

The fourth proportional to 451,112.47, 622,456.09 and 257,431.75 is: 355,210.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    451,112.47 : 622,456.09 = 257,431.75 : x
  2. Step 2: Convert to fraction form
    451,112.47/622,456.09 = 257,431.75/x
  3. Step 3: Cross multiply
    451,112.47x = 622,456.09 × 257,431.75
  4. Step 4: Simplify right side
    451,112.47x = 160,239,963,296.51
  5. Step 5: Solve for x
    x = 160,239,963,296.51/451,112.47
  6. Step 6: Final answer
    x = 355,210.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.