Home / 817,722.80-1,128,322.68-455,137.24

Finding the Fourth Proportional to 817,722.80, 1,128,322.68 and 455,137.24

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Solution

The fourth proportional to 817,722.80, 1,128,322.68 and 455,137.24 is: 628,014.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    817,722.80 : 1,128,322.68 = 455,137.24 : x
  2. Step 2: Convert to fraction form
    817,722.80/1,128,322.68 = 455,137.24/x
  3. Step 3: Cross multiply
    817,722.80x = 1,128,322.68 × 455,137.24
  4. Step 4: Simplify right side
    817,722.80x = 513,541,670,404.60
  5. Step 5: Solve for x
    x = 513,541,670,404.60/817,722.80
  6. Step 6: Final answer
    x = 628,014.37

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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.