Home / 811,273.65-1,217,109.74-278,802.33

Finding the Fourth Proportional to 811,273.65, 1,217,109.74 and 278,802.33

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Solution

The fourth proportional to 811,273.65, 1,217,109.74 and 278,802.33 is: 418,271.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,273.65 : 1,217,109.74 = 278,802.33 : x
  2. Step 2: Convert to fraction form
    811,273.65/1,217,109.74 = 278,802.33/x
  3. Step 3: Cross multiply
    811,273.65x = 1,217,109.74 × 278,802.33
  4. Step 4: Simplify right side
    811,273.65x = 339,333,029,983.68
  5. Step 5: Solve for x
    x = 339,333,029,983.68/811,273.65
  6. Step 6: Final answer
    x = 418,271.97

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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.