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Finding the Fourth Proportional to 609,103.20, 840,450.96 and 354,536.40

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Solution

The fourth proportional to 609,103.20, 840,450.96 and 354,536.40 is: 489,195.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    609,103.20 : 840,450.96 = 354,536.40 : x
  2. Step 2: Convert to fraction form
    609,103.20/840,450.96 = 354,536.40/x
  3. Step 3: Cross multiply
    609,103.20x = 840,450.96 × 354,536.40
  4. Step 4: Simplify right side
    609,103.20x = 297,970,457,734.94
  5. Step 5: Solve for x
    x = 297,970,457,734.94/609,103.20
  6. Step 6: Final answer
    x = 489,195.36

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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.