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Finding the Fourth Proportional to 635,718.45, 877,287.24 and 345,327.38

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Solution

The fourth proportional to 635,718.45, 877,287.24 and 345,327.38 is: 476,549.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    635,718.45 : 877,287.24 = 345,327.38 : x
  2. Step 2: Convert to fraction form
    635,718.45/877,287.24 = 345,327.38/x
  3. Step 3: Cross multiply
    635,718.45x = 877,287.24 × 345,327.38
  4. Step 4: Simplify right side
    635,718.45x = 302,951,299,710.20
  5. Step 5: Solve for x
    x = 302,951,299,710.20/635,718.45
  6. Step 6: Final answer
    x = 476,549.48

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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.