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Finding the Fourth Proportional to 788,446.40, 1,182,410.40 and 289,745.60

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Solution

The fourth proportional to 788,446.40, 1,182,410.40 and 289,745.60 is: 434,523.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    788,446.40 : 1,182,410.40 = 289,745.60 : x
  2. Step 2: Convert to fraction form
    788,446.40/1,182,410.40 = 289,745.60/x
  3. Step 3: Cross multiply
    788,446.40x = 1,182,410.40 × 289,745.60
  4. Step 4: Simplify right side
    788,446.40x = 342,598,210,794.24
  5. Step 5: Solve for x
    x = 342,598,210,794.24/788,446.40
  6. Step 6: Final answer
    x = 434,523.15

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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.