Home / 817,676.38-1,128,382.08-455,100.39

Finding the Fourth Proportional to 817,676.38, 1,128,382.08 and 455,100.39

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Solution

The fourth proportional to 817,676.38, 1,128,382.08 and 455,100.39 is: 628,032.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    817,676.38 : 1,128,382.08 = 455,100.39 : x
  2. Step 2: Convert to fraction form
    817,676.38/1,128,382.08 = 455,100.39/x
  3. Step 3: Cross multiply
    817,676.38x = 1,128,382.08 × 455,100.39
  4. Step 4: Simplify right side
    817,676.38x = 513,527,124,677.01
  5. Step 5: Solve for x
    x = 513,527,124,677.01/817,676.38
  6. Step 6: Final answer
    x = 628,032.24

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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.