Home / 767,428.70-1,151,142.23-261,947.72

Finding the Fourth Proportional to 767,428.70, 1,151,142.23 and 261,947.72

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Solution

The fourth proportional to 767,428.70, 1,151,142.23 and 261,947.72 is: 392,921.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    767,428.70 : 1,151,142.23 = 261,947.72 : x
  2. Step 2: Convert to fraction form
    767,428.70/1,151,142.23 = 261,947.72/x
  3. Step 3: Cross multiply
    767,428.70x = 1,151,142.23 × 261,947.72
  4. Step 4: Simplify right side
    767,428.70x = 301,539,086,076.94
  5. Step 5: Solve for x
    x = 301,539,086,076.94/767,428.70
  6. Step 6: Final answer
    x = 392,921.31

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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.