Home / 1,152,157.28-1,589,976.04-642,859.64

Finding the Fourth Proportional to 1,152,157.28, 1,589,976.04 and 642,859.64

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Solution

The fourth proportional to 1,152,157.28, 1,589,976.04 and 642,859.64 is: 887,145.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,152,157.28 : 1,589,976.04 = 642,859.64 : x
  2. Step 2: Convert to fraction form
    1,152,157.28/1,589,976.04 = 642,859.64/x
  3. Step 3: Cross multiply
    1,152,157.28x = 1,589,976.04 × 642,859.64
  4. Step 4: Simplify right side
    1,152,157.28x = 1,022,131,424,683.03
  5. Step 5: Solve for x
    x = 1,022,131,424,683.03/1,152,157.28
  6. Step 6: Final answer
    x = 887,145.74

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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.