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Finding the Fourth Proportional to 634,857.76, 876,117.09 and 348,375.34

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Solution

The fourth proportional to 634,857.76, 876,117.09 and 348,375.34 is: 480,765.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    634,857.76 : 876,117.09 = 348,375.34 : x
  2. Step 2: Convert to fraction form
    634,857.76/876,117.09 = 348,375.34/x
  3. Step 3: Cross multiply
    634,857.76x = 876,117.09 × 348,375.34
  4. Step 4: Simplify right side
    634,857.76x = 305,217,589,108.56
  5. Step 5: Solve for x
    x = 305,217,589,108.56/634,857.76
  6. Step 6: Final answer
    x = 480,765.31

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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.