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Finding the Fourth Proportional to 641,030.96, 884,545.08 and 354,512

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Solution

The fourth proportional to 641,030.96, 884,545.08 and 354,512 is: 489,183.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,030.96 : 884,545.08 = 354,512 : x
  2. Step 2: Convert to fraction form
    641,030.96/884,545.08 = 354,512/x
  3. Step 3: Cross multiply
    641,030.96x = 884,545.08 × 354,512
  4. Step 4: Simplify right side
    641,030.96x = 313,581,845,400.96
  5. Step 5: Solve for x
    x = 313,581,845,400.96/641,030.96
  6. Step 6: Final answer
    x = 489,183.62

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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.