Home / 817,745.64-1,128,489.02-455,161.72

Finding the Fourth Proportional to 817,745.64, 1,128,489.02 and 455,161.72

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Solution

The fourth proportional to 817,745.64, 1,128,489.02 and 455,161.72 is: 628,123.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    817,745.64 : 1,128,489.02 = 455,161.72 : x
  2. Step 2: Convert to fraction form
    817,745.64/1,128,489.02 = 455,161.72/x
  3. Step 3: Cross multiply
    817,745.64x = 1,128,489.02 × 455,161.72
  4. Step 4: Simplify right side
    817,745.64x = 513,645,004,482.22
  5. Step 5: Solve for x
    x = 513,645,004,482.22/817,745.64
  6. Step 6: Final answer
    x = 628,123.20

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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.