Home / 620,822.10-931,014.45-221,475.90

Finding the Fourth Proportional to 620,822.10, 931,014.45 and 221,475.90

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Solution

The fourth proportional to 620,822.10, 931,014.45 and 221,475.90 is: 332,135.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,822.10 : 931,014.45 = 221,475.90 : x
  2. Step 2: Convert to fraction form
    620,822.10/931,014.45 = 221,475.90/x
  3. Step 3: Cross multiply
    620,822.10x = 931,014.45 × 221,475.90
  4. Step 4: Simplify right side
    620,822.10x = 206,197,263,226.76
  5. Step 5: Solve for x
    x = 206,197,263,226.76/620,822.10
  6. Step 6: Final answer
    x = 332,135.83

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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.