Home / 857,743.72-1,183,682.55-490,214.73

Finding the Fourth Proportional to 857,743.72, 1,183,682.55 and 490,214.73

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Solution

The fourth proportional to 857,743.72, 1,183,682.55 and 490,214.73 is: 676,494.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    857,743.72 : 1,183,682.55 = 490,214.73 : x
  2. Step 2: Convert to fraction form
    857,743.72/1,183,682.55 = 490,214.73/x
  3. Step 3: Cross multiply
    857,743.72x = 1,183,682.55 × 490,214.73
  4. Step 4: Simplify right side
    857,743.72x = 580,258,616,243.68
  5. Step 5: Solve for x
    x = 580,258,616,243.68/857,743.72
  6. Step 6: Final answer
    x = 676,494.16

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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.