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Finding the Fourth Proportional to 635,595.90, 877,128.66 and 345,213.12

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Solution

The fourth proportional to 635,595.90, 877,128.66 and 345,213.12 is: 476,397.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    635,595.90 : 877,128.66 = 345,213.12 : x
  2. Step 2: Convert to fraction form
    635,595.90/877,128.66 = 345,213.12/x
  3. Step 3: Cross multiply
    635,595.90x = 877,128.66 × 345,213.12
  4. Step 4: Simplify right side
    635,595.90x = 302,796,321,360.02
  5. Step 5: Solve for x
    x = 302,796,321,360.02/635,595.90
  6. Step 6: Final answer
    x = 476,397.54

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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.