Home / 519,904.36-779,856.60-145,917.64

Finding the Fourth Proportional to 519,904.36, 779,856.60 and 145,917.64

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Solution

The fourth proportional to 519,904.36, 779,856.60 and 145,917.64 is: 218,876.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,904.36 : 779,856.60 = 145,917.64 : x
  2. Step 2: Convert to fraction form
    519,904.36/779,856.60 = 145,917.64/x
  3. Step 3: Cross multiply
    519,904.36x = 779,856.60 × 145,917.64
  4. Step 4: Simplify right side
    519,904.36x = 113,794,834,610.42
  5. Step 5: Solve for x
    x = 113,794,834,610.42/519,904.36
  6. Step 6: Final answer
    x = 218,876.48

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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.