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Finding the Fourth Proportional to 635,670.39, 876,858.61 and 380,873.95

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Solution

The fourth proportional to 635,670.39, 876,858.61 and 380,873.95 is: 525,386.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    635,670.39 : 876,858.61 = 380,873.95 : x
  2. Step 2: Convert to fraction form
    635,670.39/876,858.61 = 380,873.95/x
  3. Step 3: Cross multiply
    635,670.39x = 876,858.61 × 380,873.95
  4. Step 4: Simplify right side
    635,670.39x = 333,972,602,382.21
  5. Step 5: Solve for x
    x = 333,972,602,382.21/635,670.39
  6. Step 6: Final answer
    x = 525,386.44

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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.