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Finding the Fourth Proportional to 445,437.63, 665,709.72 and 325,745.87

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Solution

The fourth proportional to 445,437.63, 665,709.72 and 325,745.87 is: 486,829.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,437.63 : 665,709.72 = 325,745.87 : x
  2. Step 2: Convert to fraction form
    445,437.63/665,709.72 = 325,745.87/x
  3. Step 3: Cross multiply
    445,437.63x = 665,709.72 × 325,745.87
  4. Step 4: Simplify right side
    445,437.63x = 216,852,188,580.31
  5. Step 5: Solve for x
    x = 216,852,188,580.31/445,437.63
  6. Step 6: Final answer
    x = 486,829.52

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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.