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Finding the Fourth Proportional to 1,301,329.42, 1,795,834.20 and 728,369.44

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Solution

The fourth proportional to 1,301,329.42, 1,795,834.20 and 728,369.44 is: 1,005,149.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,301,329.42 : 1,795,834.20 = 728,369.44 : x
  2. Step 2: Convert to fraction form
    1,301,329.42/1,795,834.20 = 728,369.44/x
  3. Step 3: Cross multiply
    1,301,329.42x = 1,795,834.20 × 728,369.44
  4. Step 4: Simplify right side
    1,301,329.42x = 1,308,030,750,586.85
  5. Step 5: Solve for x
    x = 1,308,030,750,586.85/1,301,329.42
  6. Step 6: Final answer
    x = 1,005,149.60

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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.