Home / 817,910.37-1,128,753.56-455,357.26

Finding the Fourth Proportional to 817,910.37, 1,128,753.56 and 455,357.26

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Solution

The fourth proportional to 817,910.37, 1,128,753.56 and 455,357.26 is: 628,413.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    817,910.37 : 1,128,753.56 = 455,357.26 : x
  2. Step 2: Convert to fraction form
    817,910.37/1,128,753.56 = 455,357.26/x
  3. Step 3: Cross multiply
    817,910.37x = 1,128,753.56 × 455,357.26
  4. Step 4: Simplify right side
    817,910.37x = 513,986,130,846.18
  5. Step 5: Solve for x
    x = 513,986,130,846.18/817,910.37
  6. Step 6: Final answer
    x = 628,413.76

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Double scale
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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.