Home / 1,689,145.78-2,331,059.07-963,979.06

Finding the Fourth Proportional to 1,689,145.78, 2,331,059.07 and 963,979.06

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Solution

The fourth proportional to 1,689,145.78, 2,331,059.07 and 963,979.06 is: 1,330,312.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,689,145.78 : 2,331,059.07 = 963,979.06 : x
  2. Step 2: Convert to fraction form
    1,689,145.78/2,331,059.07 = 963,979.06/x
  3. Step 3: Cross multiply
    1,689,145.78x = 2,331,059.07 × 963,979.06
  4. Step 4: Simplify right side
    1,689,145.78x = 2,247,092,131,103.07
  5. Step 5: Solve for x
    x = 2,247,092,131,103.07/1,689,145.78
  6. Step 6: Final answer
    x = 1,330,312.73

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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.