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Finding the Fourth Proportional to 603,608.68, 832,409 and 396,511.43

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Solution

The fourth proportional to 603,608.68, 832,409 and 396,511.43 is: 546,810.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    603,608.68 : 832,409 = 396,511.43 : x
  2. Step 2: Convert to fraction form
    603,608.68/832,409 = 396,511.43/x
  3. Step 3: Cross multiply
    603,608.68x = 832,409 × 396,511.43
  4. Step 4: Simplify right side
    603,608.68x = 330,059,682,934.87
  5. Step 5: Solve for x
    x = 330,059,682,934.87/603,608.68
  6. Step 6: Final answer
    x = 546,810.70

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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.