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Finding the Fourth Proportional to 634,812.31, 951,657.94 and 485,718.19

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Solution

The fourth proportional to 634,812.31, 951,657.94 and 485,718.19 is: 728,148.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    634,812.31 : 951,657.94 = 485,718.19 : x
  2. Step 2: Convert to fraction form
    634,812.31/951,657.94 = 485,718.19/x
  3. Step 3: Cross multiply
    634,812.31x = 951,657.94 × 485,718.19
  4. Step 4: Simplify right side
    634,812.31x = 462,237,576,291.79
  5. Step 5: Solve for x
    x = 462,237,576,291.79/634,812.31
  6. Step 6: Final answer
    x = 728,148.42

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.