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Finding the Fourth Proportional to 445,147.68, 663,751.20 and 395,692.32

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Solution

The fourth proportional to 445,147.68, 663,751.20 and 395,692.32 is: 590,009.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,147.68 : 663,751.20 = 395,692.32 : x
  2. Step 2: Convert to fraction form
    445,147.68/663,751.20 = 395,692.32/x
  3. Step 3: Cross multiply
    445,147.68x = 663,751.20 × 395,692.32
  4. Step 4: Simplify right side
    445,147.68x = 262,641,252,230.78
  5. Step 5: Solve for x
    x = 262,641,252,230.78/445,147.68
  6. Step 6: Final answer
    x = 590,009.26

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.