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Finding the Fourth Proportional to 635,471.34, 876,949.40 and 348,991.42

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Solution

The fourth proportional to 635,471.34, 876,949.40 and 348,991.42 is: 481,607.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    635,471.34 : 876,949.40 = 348,991.42 : x
  2. Step 2: Convert to fraction form
    635,471.34/876,949.40 = 348,991.42/x
  3. Step 3: Cross multiply
    635,471.34x = 876,949.40 × 348,991.42
  4. Step 4: Simplify right side
    635,471.34x = 306,047,815,054.25
  5. Step 5: Solve for x
    x = 306,047,815,054.25/635,471.34
  6. Step 6: Final answer
    x = 481,607.58

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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.