Home / 688,611.28-1,032,976.44-189,975.28

Finding the Fourth Proportional to 688,611.28, 1,032,976.44 and 189,975.28

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Solution

The fourth proportional to 688,611.28, 1,032,976.44 and 189,975.28 is: 284,979.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,611.28 : 1,032,976.44 = 189,975.28 : x
  2. Step 2: Convert to fraction form
    688,611.28/1,032,976.44 = 189,975.28/x
  3. Step 3: Cross multiply
    688,611.28x = 1,032,976.44 × 189,975.28
  4. Step 4: Simplify right side
    688,611.28x = 196,239,988,422.40
  5. Step 5: Solve for x
    x = 196,239,988,422.40/688,611.28
  6. Step 6: Final answer
    x = 284,979.34

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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.