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Finding the Fourth Proportional to 446,747.20, 670,120.80 and 396,980.80

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Solution

The fourth proportional to 446,747.20, 670,120.80 and 396,980.80 is: 595,471.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    446,747.20 : 670,120.80 = 396,980.80 : x
  2. Step 2: Convert to fraction form
    446,747.20/670,120.80 = 396,980.80/x
  3. Step 3: Cross multiply
    446,747.20x = 670,120.80 × 396,980.80
  4. Step 4: Simplify right side
    446,747.20x = 266,025,091,280.64
  5. Step 5: Solve for x
    x = 266,025,091,280.64/446,747.20
  6. Step 6: Final answer
    x = 595,471.20

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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.