Home / 817,608.88-1,128,300.27-455,118.38

Finding the Fourth Proportional to 817,608.88, 1,128,300.27 and 455,118.38

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Solution

The fourth proportional to 817,608.88, 1,128,300.27 and 455,118.38 is: 628,063.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    817,608.88 : 1,128,300.27 = 455,118.38 : x
  2. Step 2: Convert to fraction form
    817,608.88/1,128,300.27 = 455,118.38/x
  3. Step 3: Cross multiply
    817,608.88x = 1,128,300.27 × 455,118.38
  4. Step 4: Simplify right side
    817,608.88x = 513,510,183,118.87
  5. Step 5: Solve for x
    x = 513,510,183,118.87/817,608.88
  6. Step 6: Final answer
    x = 628,063.36

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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.