Home / 817,099.09-1,225,845.47-256,133.59

Finding the Fourth Proportional to 817,099.09, 1,225,845.47 and 256,133.59

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Solution

The fourth proportional to 817,099.09, 1,225,845.47 and 256,133.59 is: 384,262.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    817,099.09 : 1,225,845.47 = 256,133.59 : x
  2. Step 2: Convert to fraction form
    817,099.09/1,225,845.47 = 256,133.59/x
  3. Step 3: Cross multiply
    817,099.09x = 1,225,845.47 × 256,133.59
  4. Step 4: Simplify right side
    817,099.09x = 313,980,201,016.34
  5. Step 5: Solve for x
    x = 313,980,201,016.34/817,099.09
  6. Step 6: Final answer
    x = 384,262.09

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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.