Home / 919,739.21-1,268,154.36-629,490.83

Finding the Fourth Proportional to 919,739.21, 1,268,154.36 and 629,490.83

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Solution

The fourth proportional to 919,739.21, 1,268,154.36 and 629,490.83 is: 867,954.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,739.21 : 1,268,154.36 = 629,490.83 : x
  2. Step 2: Convert to fraction form
    919,739.21/1,268,154.36 = 629,490.83/x
  3. Step 3: Cross multiply
    919,739.21x = 1,268,154.36 × 629,490.83
  4. Step 4: Simplify right side
    919,739.21x = 798,291,534,303.75
  5. Step 5: Solve for x
    x = 798,291,534,303.75/919,739.21
  6. Step 6: Final answer
    x = 867,954.23

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.