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Finding the Fourth Proportional to 565,923.74, 780,744.36 and 320,856.86

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Solution

The fourth proportional to 565,923.74, 780,744.36 and 320,856.86 is: 442,651.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    565,923.74 : 780,744.36 = 320,856.86 : x
  2. Step 2: Convert to fraction form
    565,923.74/780,744.36 = 320,856.86/x
  3. Step 3: Cross multiply
    565,923.74x = 780,744.36 × 320,856.86
  4. Step 4: Simplify right side
    565,923.74x = 250,507,183,812.31
  5. Step 5: Solve for x
    x = 250,507,183,812.31/565,923.74
  6. Step 6: Final answer
    x = 442,651.84

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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.