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Finding the Fourth Proportional to 609,070.80, 840,324.46 and 354,372.78

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Solution

The fourth proportional to 609,070.80, 840,324.46 and 354,372.78 is: 488,922.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    609,070.80 : 840,324.46 = 354,372.78 : x
  2. Step 2: Convert to fraction form
    609,070.80/840,324.46 = 354,372.78/x
  3. Step 3: Cross multiply
    609,070.80x = 840,324.46 × 354,372.78
  4. Step 4: Simplify right side
    609,070.80x = 297,788,114,992.20
  5. Step 5: Solve for x
    x = 297,788,114,992.20/609,070.80
  6. Step 6: Final answer
    x = 488,922.00

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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.