Home / 405,176.80-606,890.40-263,459.20

Finding the Fourth Proportional to 405,176.80, 606,890.40 and 263,459.20

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Solution

The fourth proportional to 405,176.80, 606,890.40 and 263,459.20 is: 394,619.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,176.80 : 606,890.40 = 263,459.20 : x
  2. Step 2: Convert to fraction form
    405,176.80/606,890.40 = 263,459.20/x
  3. Step 3: Cross multiply
    405,176.80x = 606,890.40 × 263,459.20
  4. Step 4: Simplify right side
    405,176.80x = 159,890,859,271.68
  5. Step 5: Solve for x
    x = 159,890,859,271.68/405,176.80
  6. Step 6: Final answer
    x = 394,619.98

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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.