Home / 450,520.96-621,720.58-243,789.36

Finding the Fourth Proportional to 450,520.96, 621,720.58 and 243,789.36

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Solution

The fourth proportional to 450,520.96, 621,720.58 and 243,789.36 is: 336,430.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    450,520.96 : 621,720.58 = 243,789.36 : x
  2. Step 2: Convert to fraction form
    450,520.96/621,720.58 = 243,789.36/x
  3. Step 3: Cross multiply
    450,520.96x = 621,720.58 × 243,789.36
  4. Step 4: Simplify right side
    450,520.96x = 151,568,862,297.03
  5. Step 5: Solve for x
    x = 151,568,862,297.03/450,520.96
  6. Step 6: Final answer
    x = 336,430.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.