Home / 811,662.60-1,120,127.34-449,080.56

Finding the Fourth Proportional to 811,662.60, 1,120,127.34 and 449,080.56

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Solution

The fourth proportional to 811,662.60, 1,120,127.34 and 449,080.56 is: 619,749.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,662.60 : 1,120,127.34 = 449,080.56 : x
  2. Step 2: Convert to fraction form
    811,662.60/1,120,127.34 = 449,080.56/x
  3. Step 3: Cross multiply
    811,662.60x = 1,120,127.34 × 449,080.56
  4. Step 4: Simplify right side
    811,662.60x = 503,027,413,118.51
  5. Step 5: Solve for x
    x = 503,027,413,118.51/811,662.60
  6. Step 6: Final answer
    x = 619,749.40

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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.