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Finding the Fourth Proportional to 635,203, 876,657.90 and 366,931

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Solution

The fourth proportional to 635,203, 876,657.90 and 366,931 is: 506,409.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    635,203 : 876,657.90 = 366,931 : x
  2. Step 2: Convert to fraction form
    635,203/876,657.90 = 366,931/x
  3. Step 3: Cross multiply
    635,203x = 876,657.90 × 366,931
  4. Step 4: Simplify right side
    635,203x = 321,672,959,904.90
  5. Step 5: Solve for x
    x = 321,672,959,904.90/635,203
  6. Step 6: Final answer
    x = 506,409.70

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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.