Home / 505,890.72-698,124.24-279,531.36

Finding the Fourth Proportional to 505,890.72, 698,124.24 and 279,531.36

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Solution

The fourth proportional to 505,890.72, 698,124.24 and 279,531.36 is: 385,750.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,890.72 : 698,124.24 = 279,531.36 : x
  2. Step 2: Convert to fraction form
    505,890.72/698,124.24 = 279,531.36/x
  3. Step 3: Cross multiply
    505,890.72x = 698,124.24 × 279,531.36
  4. Step 4: Simplify right side
    505,890.72x = 195,147,618,256.17
  5. Step 5: Solve for x
    x = 195,147,618,256.17/505,890.72
  6. Step 6: Final answer
    x = 385,750.54

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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.