Home / 1,259,315.30-1,889,531.32-660,133.46

Finding the Fourth Proportional to 1,259,315.30, 1,889,531.32 and 660,133.46

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Solution

The fourth proportional to 1,259,315.30, 1,889,531.32 and 660,133.46 is: 990,492.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,259,315.30 : 1,889,531.32 = 660,133.46 : x
  2. Step 2: Convert to fraction form
    1,259,315.30/1,889,531.32 = 660,133.46/x
  3. Step 3: Cross multiply
    1,259,315.30x = 1,889,531.32 × 660,133.46
  4. Step 4: Simplify right side
    1,259,315.30x = 1,247,342,848,049.97
  5. Step 5: Solve for x
    x = 1,247,342,848,049.97/1,259,315.30
  6. Step 6: Final answer
    x = 990,492.89

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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.