Home / 814,745.36-1,221,379.32-440,330.96

Finding the Fourth Proportional to 814,745.36, 1,221,379.32 and 440,330.96

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Solution

The fourth proportional to 814,745.36, 1,221,379.32 and 440,330.96 is: 660,097.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    814,745.36 : 1,221,379.32 = 440,330.96 : x
  2. Step 2: Convert to fraction form
    814,745.36/1,221,379.32 = 440,330.96/x
  3. Step 3: Cross multiply
    814,745.36x = 1,221,379.32 × 440,330.96
  4. Step 4: Simplify right side
    814,745.36x = 537,811,128,499.75
  5. Step 5: Solve for x
    x = 537,811,128,499.75/814,745.36
  6. Step 6: Final answer
    x = 660,097.20

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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.