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Finding the Fourth Proportional to 818,448.32, 1,129,515.42 and 496,172

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Solution

The fourth proportional to 818,448.32, 1,129,515.42 and 496,172 is: 684,751.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    818,448.32 : 1,129,515.42 = 496,172 : x
  2. Step 2: Convert to fraction form
    818,448.32/1,129,515.42 = 496,172/x
  3. Step 3: Cross multiply
    818,448.32x = 1,129,515.42 × 496,172
  4. Step 4: Simplify right side
    818,448.32x = 560,433,924,972.24
  5. Step 5: Solve for x
    x = 560,433,924,972.24/818,448.32
  6. Step 6: Final answer
    x = 684,751.76

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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.