Home / 635,815.69-878,201.89-475,382.23

Finding the Fourth Proportional to 635,815.69, 878,201.89 and 475,382.23

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Solution

The fourth proportional to 635,815.69, 878,201.89 and 475,382.23 is: 656,607.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    635,815.69 : 878,201.89 = 475,382.23 : x
  2. Step 2: Convert to fraction form
    635,815.69/878,201.89 = 475,382.23/x
  3. Step 3: Cross multiply
    635,815.69x = 878,201.89 × 475,382.23
  4. Step 4: Simplify right side
    635,815.69x = 417,481,572,858.42
  5. Step 5: Solve for x
    x = 417,481,572,858.42/635,815.69
  6. Step 6: Final answer
    x = 656,607.85

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Double scale
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1.5x scale

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.