Home / 689,295-1,034,016.66-289,976.40

Finding the Fourth Proportional to 689,295, 1,034,016.66 and 289,976.40

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Solution

The fourth proportional to 689,295, 1,034,016.66 and 289,976.40 is: 434,995.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,295 : 1,034,016.66 = 289,976.40 : x
  2. Step 2: Convert to fraction form
    689,295/1,034,016.66 = 289,976.40/x
  3. Step 3: Cross multiply
    689,295x = 1,034,016.66 × 289,976.40
  4. Step 4: Simplify right side
    689,295x = 299,840,428,606.82
  5. Step 5: Solve for x
    x = 299,840,428,606.82/689,295
  6. Step 6: Final answer
    x = 434,995.80

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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.