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Finding the Fourth Proportional to 554,310.60, 829,389.90 and 394,755.40

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Solution

The fourth proportional to 554,310.60, 829,389.90 and 394,755.40 is: 590,654.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,310.60 : 829,389.90 = 394,755.40 : x
  2. Step 2: Convert to fraction form
    554,310.60/829,389.90 = 394,755.40/x
  3. Step 3: Cross multiply
    554,310.60x = 829,389.90 × 394,755.40
  4. Step 4: Simplify right side
    554,310.60x = 327,406,141,730.46
  5. Step 5: Solve for x
    x = 327,406,141,730.46/554,310.60
  6. Step 6: Final answer
    x = 590,654.66

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.