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Finding the Fourth Proportional to 565,816.19, 780,835.85 and 324,119.88

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Solution

The fourth proportional to 565,816.19, 780,835.85 and 324,119.88 is: 447,290.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    565,816.19 : 780,835.85 = 324,119.88 : x
  2. Step 2: Convert to fraction form
    565,816.19/780,835.85 = 324,119.88/x
  3. Step 3: Cross multiply
    565,816.19x = 780,835.85 × 324,119.88
  4. Step 4: Simplify right side
    565,816.19x = 253,084,421,596.55
  5. Step 5: Solve for x
    x = 253,084,421,596.55/565,816.19
  6. Step 6: Final answer
    x = 447,290.88

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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.