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Finding the Fourth Proportional to 634,813.30, 876,007.20 and 348,310.63

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Solution

The fourth proportional to 634,813.30, 876,007.20 and 348,310.63 is: 480,649.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    634,813.30 : 876,007.20 = 348,310.63 : x
  2. Step 2: Convert to fraction form
    634,813.30/876,007.20 = 348,310.63/x
  3. Step 3: Cross multiply
    634,813.30x = 876,007.20 × 348,310.63
  4. Step 4: Simplify right side
    634,813.30x = 305,122,619,716.54
  5. Step 5: Solve for x
    x = 305,122,619,716.54/634,813.30
  6. Step 6: Final answer
    x = 480,649.38

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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.