Home / 1,286,172.11-1,929,258.85-326,699.67

Finding the Fourth Proportional to 1,286,172.11, 1,929,258.85 and 326,699.67

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Solution

The fourth proportional to 1,286,172.11, 1,929,258.85 and 326,699.67 is: 490,049.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,286,172.11 : 1,929,258.85 = 326,699.67 : x
  2. Step 2: Convert to fraction form
    1,286,172.11/1,929,258.85 = 326,699.67/x
  3. Step 3: Cross multiply
    1,286,172.11x = 1,929,258.85 × 326,699.67
  4. Step 4: Simplify right side
    1,286,172.11x = 630,288,228,822.83
  5. Step 5: Solve for x
    x = 630,288,228,822.83/1,286,172.11
  6. Step 6: Final answer
    x = 490,049.68

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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.