Home / 519,327.10-780,360.60-279,618.23

Finding the Fourth Proportional to 519,327.10, 780,360.60 and 279,618.23

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Solution

The fourth proportional to 519,327.10, 780,360.60 and 279,618.23 is: 420,164.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,327.10 : 780,360.60 = 279,618.23 : x
  2. Step 2: Convert to fraction form
    519,327.10/780,360.60 = 279,618.23/x
  3. Step 3: Cross multiply
    519,327.10x = 780,360.60 × 279,618.23
  4. Step 4: Simplify right side
    519,327.10x = 218,203,045,831.94
  5. Step 5: Solve for x
    x = 218,203,045,831.94/519,327.10
  6. Step 6: Final answer
    x = 420,164.96

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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.