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Finding the Fourth Proportional to 892,145, 1,338,480.38 and 359,391.88

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Solution

The fourth proportional to 892,145, 1,338,480.38 and 359,391.88 is: 539,193.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    892,145 : 1,338,480.38 = 359,391.88 : x
  2. Step 2: Convert to fraction form
    892,145/1,338,480.38 = 359,391.88/x
  3. Step 3: Cross multiply
    892,145x = 1,338,480.38 × 359,391.88
  4. Step 4: Simplify right side
    892,145x = 481,038,980,111.31
  5. Step 5: Solve for x
    x = 481,038,980,111.31/892,145
  6. Step 6: Final answer
    x = 539,193.72

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.