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Finding the Fourth Proportional to 634,891.88, 876,121.98 and 348,406.22

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Solution

The fourth proportional to 634,891.88, 876,121.98 and 348,406.22 is: 480,784.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    634,891.88 : 876,121.98 = 348,406.22 : x
  2. Step 2: Convert to fraction form
    634,891.88/876,121.98 = 348,406.22/x
  3. Step 3: Cross multiply
    634,891.88x = 876,121.98 × 348,406.22
  4. Step 4: Simplify right side
    634,891.88x = 305,246,347,310.72
  5. Step 5: Solve for x
    x = 305,246,347,310.72/634,891.88
  6. Step 6: Final answer
    x = 480,784.77

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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.