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Finding the Fourth Proportional to 635,459.09, 876,930.36 and 345,068.07

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Solution

The fourth proportional to 635,459.09, 876,930.36 and 345,068.07 is: 476,192.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    635,459.09 : 876,930.36 = 345,068.07 : x
  2. Step 2: Convert to fraction form
    635,459.09/876,930.36 = 345,068.07/x
  3. Step 3: Cross multiply
    635,459.09x = 876,930.36 × 345,068.07
  4. Step 4: Simplify right side
    635,459.09x = 302,600,666,849.61
  5. Step 5: Solve for x
    x = 302,600,666,849.61/635,459.09
  6. Step 6: Final answer
    x = 476,192.21

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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.