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Finding the Fourth Proportional to 634,872.56, 876,149.40 and 348,402.90

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Solution

The fourth proportional to 634,872.56, 876,149.40 and 348,402.90 is: 480,809.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    634,872.56 : 876,149.40 = 348,402.90 : x
  2. Step 2: Convert to fraction form
    634,872.56/876,149.40 = 348,402.90/x
  3. Step 3: Cross multiply
    634,872.56x = 876,149.40 × 348,402.90
  4. Step 4: Simplify right side
    634,872.56x = 305,252,991,793.26
  5. Step 5: Solve for x
    x = 305,252,991,793.26/634,872.56
  6. Step 6: Final answer
    x = 480,809.87

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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.