Home / 811,896.48-1,120,419.30-449,345.34

Finding the Fourth Proportional to 811,896.48, 1,120,419.30 and 449,345.34

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Solution

The fourth proportional to 811,896.48, 1,120,419.30 and 449,345.34 is: 620,097.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,896.48 : 1,120,419.30 = 449,345.34 : x
  2. Step 2: Convert to fraction form
    811,896.48/1,120,419.30 = 449,345.34/x
  3. Step 3: Cross multiply
    811,896.48x = 1,120,419.30 × 449,345.34
  4. Step 4: Simplify right side
    811,896.48x = 503,455,191,301.06
  5. Step 5: Solve for x
    x = 503,455,191,301.06/811,896.48
  6. Step 6: Final answer
    x = 620,097.76

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Double scale
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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.