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Finding the Fourth Proportional to 635,342.07, 876,800.66 and 380,687.79

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Solution

The fourth proportional to 635,342.07, 876,800.66 and 380,687.79 is: 525,366.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    635,342.07 : 876,800.66 = 380,687.79 : x
  2. Step 2: Convert to fraction form
    635,342.07/876,800.66 = 380,687.79/x
  3. Step 3: Cross multiply
    635,342.07x = 876,800.66 × 380,687.79
  4. Step 4: Simplify right side
    635,342.07x = 333,787,303,622.50
  5. Step 5: Solve for x
    x = 333,787,303,622.50/635,342.07
  6. Step 6: Final answer
    x = 525,366.29

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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.