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Finding the Fourth Proportional to 612,043.20, 917,627.40 and 274,807.80

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Solution

The fourth proportional to 612,043.20, 917,627.40 and 274,807.80 is: 412,015.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,043.20 : 917,627.40 = 274,807.80 : x
  2. Step 2: Convert to fraction form
    612,043.20/917,627.40 = 274,807.80/x
  3. Step 3: Cross multiply
    612,043.20x = 917,627.40 × 274,807.80
  4. Step 4: Simplify right side
    612,043.20x = 252,171,167,013.72
  5. Step 5: Solve for x
    x = 252,171,167,013.72/612,043.20
  6. Step 6: Final answer
    x = 412,015.31

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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.