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Finding the Fourth Proportional to 641,227.60, 884,908.20 and 354,768.04

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Solution

The fourth proportional to 641,227.60, 884,908.20 and 354,768.04 is: 489,587.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,227.60 : 884,908.20 = 354,768.04 : x
  2. Step 2: Convert to fraction form
    641,227.60/884,908.20 = 354,768.04/x
  3. Step 3: Cross multiply
    641,227.60x = 884,908.20 × 354,768.04
  4. Step 4: Simplify right side
    641,227.60x = 313,937,147,693.93
  5. Step 5: Solve for x
    x = 313,937,147,693.93/641,227.60
  6. Step 6: Final answer
    x = 489,587.70

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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.