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Finding the Fourth Proportional to 408,534.60, 612,801.90 and 303,558.60

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Solution

The fourth proportional to 408,534.60, 612,801.90 and 303,558.60 is: 455,337.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,534.60 : 612,801.90 = 303,558.60 : x
  2. Step 2: Convert to fraction form
    408,534.60/612,801.90 = 303,558.60/x
  3. Step 3: Cross multiply
    408,534.60x = 612,801.90 × 303,558.60
  4. Step 4: Simplify right side
    408,534.60x = 186,021,286,841.34
  5. Step 5: Solve for x
    x = 186,021,286,841.34/408,534.60
  6. Step 6: Final answer
    x = 455,337.90

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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.