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Finding the Fourth Proportional to 635,780.73, 877,378.18 and 345,392.49

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Solution

The fourth proportional to 635,780.73, 877,378.18 and 345,392.49 is: 476,642.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    635,780.73 : 877,378.18 = 345,392.49 : x
  2. Step 2: Convert to fraction form
    635,780.73/877,378.18 = 345,392.49/x
  3. Step 3: Cross multiply
    635,780.73x = 877,378.18 × 345,392.49
  4. Step 4: Simplify right side
    635,780.73x = 303,039,833,398.39
  5. Step 5: Solve for x
    x = 303,039,833,398.39/635,780.73
  6. Step 6: Final answer
    x = 476,642.05

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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.