Home / 821,203.63-1,231,849.19-260,281.87

Finding the Fourth Proportional to 821,203.63, 1,231,849.19 and 260,281.87

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Solution

The fourth proportional to 821,203.63, 1,231,849.19 and 260,281.87 is: 390,436.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,203.63 : 1,231,849.19 = 260,281.87 : x
  2. Step 2: Convert to fraction form
    821,203.63/1,231,849.19 = 260,281.87/x
  3. Step 3: Cross multiply
    821,203.63x = 1,231,849.19 × 260,281.87
  4. Step 4: Simplify right side
    821,203.63x = 320,628,010,731.19
  5. Step 5: Solve for x
    x = 320,628,010,731.19/821,203.63
  6. Step 6: Final answer
    x = 390,436.67

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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.