Home / 665,917.81-919,026.61-379,530.16

Finding the Fourth Proportional to 665,917.81, 919,026.61 and 379,530.16

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Solution

The fourth proportional to 665,917.81, 919,026.61 and 379,530.16 is: 523,785.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,917.81 : 919,026.61 = 379,530.16 : x
  2. Step 2: Convert to fraction form
    665,917.81/919,026.61 = 379,530.16/x
  3. Step 3: Cross multiply
    665,917.81x = 919,026.61 × 379,530.16
  4. Step 4: Simplify right side
    665,917.81x = 348,798,313,091.17
  5. Step 5: Solve for x
    x = 348,798,313,091.17/665,917.81
  6. Step 6: Final answer
    x = 523,785.83

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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.