Home / 780,989.36-1,170,146.72-426,252.29

Finding the Fourth Proportional to 780,989.36, 1,170,146.72 and 426,252.29

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Solution

The fourth proportional to 780,989.36, 1,170,146.72 and 426,252.29 is: 638,648.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,989.36 : 1,170,146.72 = 426,252.29 : x
  2. Step 2: Convert to fraction form
    780,989.36/1,170,146.72 = 426,252.29/x
  3. Step 3: Cross multiply
    780,989.36x = 1,170,146.72 × 426,252.29
  4. Step 4: Simplify right side
    780,989.36x = 498,777,711,053.99
  5. Step 5: Solve for x
    x = 498,777,711,053.99/780,989.36
  6. Step 6: Final answer
    x = 638,648.54

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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.