Home / 817,756.44-1,128,503.67-455,172.48

Finding the Fourth Proportional to 817,756.44, 1,128,503.67 and 455,172.48

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Solution

The fourth proportional to 817,756.44, 1,128,503.67 and 455,172.48 is: 628,137.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    817,756.44 : 1,128,503.67 = 455,172.48 : x
  2. Step 2: Convert to fraction form
    817,756.44/1,128,503.67 = 455,172.48/x
  3. Step 3: Cross multiply
    817,756.44x = 1,128,503.67 × 455,172.48
  4. Step 4: Simplify right side
    817,756.44x = 513,663,814,163.00
  5. Step 5: Solve for x
    x = 513,663,814,163.00/817,756.44
  6. Step 6: Final answer
    x = 628,137.90

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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.