Home / 778,979.80-1,168,469.70-646,010.20

Finding the Fourth Proportional to 778,979.80, 1,168,469.70 and 646,010.20

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Solution

The fourth proportional to 778,979.80, 1,168,469.70 and 646,010.20 is: 969,015.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,979.80 : 1,168,469.70 = 646,010.20 : x
  2. Step 2: Convert to fraction form
    778,979.80/1,168,469.70 = 646,010.20/x
  3. Step 3: Cross multiply
    778,979.80x = 1,168,469.70 × 646,010.20
  4. Step 4: Simplify right side
    778,979.80x = 754,843,344,590.94
  5. Step 5: Solve for x
    x = 754,843,344,590.94/778,979.80
  6. Step 6: Final answer
    x = 969,015.30

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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.