Home / 821,205.13-1,231,851.44-260,283.37

Finding the Fourth Proportional to 821,205.13, 1,231,851.44 and 260,283.37

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Solution

The fourth proportional to 821,205.13, 1,231,851.44 and 260,283.37 is: 390,438.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,205.13 : 1,231,851.44 = 260,283.37 : x
  2. Step 2: Convert to fraction form
    821,205.13/1,231,851.44 = 260,283.37/x
  3. Step 3: Cross multiply
    821,205.13x = 1,231,851.44 × 260,283.37
  4. Step 4: Simplify right side
    821,205.13x = 320,630,444,142.55
  5. Step 5: Solve for x
    x = 320,630,444,142.55/821,205.13
  6. Step 6: Final answer
    x = 390,438.92

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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.