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Finding the Fourth Proportional to 635,491.51, 876,974.90 and 345,100.54

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Solution

The fourth proportional to 635,491.51, 876,974.90 and 345,100.54 is: 476,236.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    635,491.51 : 876,974.90 = 345,100.54 : x
  2. Step 2: Convert to fraction form
    635,491.51/876,974.90 = 345,100.54/x
  3. Step 3: Cross multiply
    635,491.51x = 876,974.90 × 345,100.54
  4. Step 4: Simplify right side
    635,491.51x = 302,644,507,638.51
  5. Step 5: Solve for x
    x = 302,644,507,638.51/635,491.51
  6. Step 6: Final answer
    x = 476,236.90

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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.