Home / 635,721.18-878,072.31-475,289.34

Finding the Fourth Proportional to 635,721.18, 878,072.31 and 475,289.34

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Solution

The fourth proportional to 635,721.18, 878,072.31 and 475,289.34 is: 656,480.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    635,721.18 : 878,072.31 = 475,289.34 : x
  2. Step 2: Convert to fraction form
    635,721.18/878,072.31 = 475,289.34/x
  3. Step 3: Cross multiply
    635,721.18x = 878,072.31 × 475,289.34
  4. Step 4: Simplify right side
    635,721.18x = 417,338,408,692.18
  5. Step 5: Solve for x
    x = 417,338,408,692.18/635,721.18
  6. Step 6: Final answer
    x = 656,480.26

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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.