Home / 817,610.22-1,128,302.09-455,119.71

Finding the Fourth Proportional to 817,610.22, 1,128,302.09 and 455,119.71

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Solution

The fourth proportional to 817,610.22, 1,128,302.09 and 455,119.71 is: 628,065.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    817,610.22 : 1,128,302.09 = 455,119.71 : x
  2. Step 2: Convert to fraction form
    817,610.22/1,128,302.09 = 455,119.71/x
  3. Step 3: Cross multiply
    817,610.22x = 1,128,302.09 × 455,119.71
  4. Step 4: Simplify right side
    817,610.22x = 513,512,519,993.19
  5. Step 5: Solve for x
    x = 513,512,519,993.19/817,610.22
  6. Step 6: Final answer
    x = 628,065.19

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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.