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Finding the Fourth Proportional to 455,362.38, 628,907.58 and 354,600

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Solution

The fourth proportional to 455,362.38, 628,907.58 and 354,600 is: 489,743.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,362.38 : 628,907.58 = 354,600 : x
  2. Step 2: Convert to fraction form
    455,362.38/628,907.58 = 354,600/x
  3. Step 3: Cross multiply
    455,362.38x = 628,907.58 × 354,600
  4. Step 4: Simplify right side
    455,362.38x = 223,010,627,868
  5. Step 5: Solve for x
    x = 223,010,627,868/455,362.38
  6. Step 6: Final answer
    x = 489,743.20

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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.