Home / 1,222,321.80-1,834,138.80-512,421.60

Finding the Fourth Proportional to 1,222,321.80, 1,834,138.80 and 512,421.60

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Solution

The fourth proportional to 1,222,321.80, 1,834,138.80 and 512,421.60 is: 768,907.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,222,321.80 : 1,834,138.80 = 512,421.60 : x
  2. Step 2: Convert to fraction form
    1,222,321.80/1,834,138.80 = 512,421.60/x
  3. Step 3: Cross multiply
    1,222,321.80x = 1,834,138.80 × 512,421.60
  4. Step 4: Simplify right side
    1,222,321.80x = 939,852,338,518.08
  5. Step 5: Solve for x
    x = 939,852,338,518.08/1,222,321.80
  6. Step 6: Final answer
    x = 768,907.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.