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Finding the Fourth Proportional to 641,225.60, 884,842.56 and 354,739.56

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Solution

The fourth proportional to 641,225.60, 884,842.56 and 354,739.56 is: 489,513.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,225.60 : 884,842.56 = 354,739.56 : x
  2. Step 2: Convert to fraction form
    641,225.60/884,842.56 = 354,739.56/x
  3. Step 3: Cross multiply
    641,225.60x = 884,842.56 × 354,739.56
  4. Step 4: Simplify right side
    641,225.60x = 313,888,660,403.67
  5. Step 5: Solve for x
    x = 313,888,660,403.67/641,225.60
  6. Step 6: Final answer
    x = 489,513.61

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1.5x scale

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.