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Finding the Fourth Proportional to 641,216.96, 884,830.63 and 354,730.89

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Solution

The fourth proportional to 641,216.96, 884,830.63 and 354,730.89 is: 489,501.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,216.96 : 884,830.63 = 354,730.89 : x
  2. Step 2: Convert to fraction form
    641,216.96/884,830.63 = 354,730.89/x
  3. Step 3: Cross multiply
    641,216.96x = 884,830.63 × 354,730.89
  4. Step 4: Simplify right side
    641,216.96x = 313,876,756,879.16
  5. Step 5: Solve for x
    x = 313,876,756,879.16/641,216.96
  6. Step 6: Final answer
    x = 489,501.65

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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.