Home / 781,023.78-1,171,087.26-307,450.80

Finding the Fourth Proportional to 781,023.78, 1,171,087.26 and 307,450.80

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Solution

The fourth proportional to 781,023.78, 1,171,087.26 and 307,450.80 is: 460,999.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,023.78 : 1,171,087.26 = 307,450.80 : x
  2. Step 2: Convert to fraction form
    781,023.78/1,171,087.26 = 307,450.80/x
  3. Step 3: Cross multiply
    781,023.78x = 1,171,087.26 × 307,450.80
  4. Step 4: Simplify right side
    781,023.78x = 360,051,714,956.81
  5. Step 5: Solve for x
    x = 360,051,714,956.81/781,023.78
  6. Step 6: Final answer
    x = 460,999.68

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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.