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Finding the Fourth Proportional to 612,040.20, 917,622.90 and 274,804.80

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Solution

The fourth proportional to 612,040.20, 917,622.90 and 274,804.80 is: 412,010.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,040.20 : 917,622.90 = 274,804.80 : x
  2. Step 2: Convert to fraction form
    612,040.20/917,622.90 = 274,804.80/x
  3. Step 3: Cross multiply
    612,040.20x = 917,622.90 × 274,804.80
  4. Step 4: Simplify right side
    612,040.20x = 252,167,177,509.92
  5. Step 5: Solve for x
    x = 252,167,177,509.92/612,040.20
  6. Step 6: Final answer
    x = 412,010.81

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1.5x scale

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.