Home / 621,029.80-931,544.70-221,683.60

Finding the Fourth Proportional to 621,029.80, 931,544.70 and 221,683.60

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Solution

The fourth proportional to 621,029.80, 931,544.70 and 221,683.60 is: 332,525.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,029.80 : 931,544.70 = 221,683.60 : x
  2. Step 2: Convert to fraction form
    621,029.80/931,544.70 = 221,683.60/x
  3. Step 3: Cross multiply
    621,029.80x = 931,544.70 × 221,683.60
  4. Step 4: Simplify right side
    621,029.80x = 206,508,182,656.92
  5. Step 5: Solve for x
    x = 206,508,182,656.92/621,029.80
  6. Step 6: Final answer
    x = 332,525.40

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Double scale
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Similar ratio
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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.