Home / 817,745.01-1,128,488.16-455,161.10

Finding the Fourth Proportional to 817,745.01, 1,128,488.16 and 455,161.10

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Solution

The fourth proportional to 817,745.01, 1,128,488.16 and 455,161.10 is: 628,122.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    817,745.01 : 1,128,488.16 = 455,161.10 : x
  2. Step 2: Convert to fraction form
    817,745.01/1,128,488.16 = 455,161.10/x
  3. Step 3: Cross multiply
    817,745.01x = 1,128,488.16 × 455,161.10
  4. Step 4: Simplify right side
    817,745.01x = 513,643,906,600.14
  5. Step 5: Solve for x
    x = 513,643,906,600.14/817,745.01
  6. Step 6: Final answer
    x = 628,122.34

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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.