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Finding the Fourth Proportional to 654,045.90, 978,736.05 and 453,425.10

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Solution

The fourth proportional to 654,045.90, 978,736.05 and 453,425.10 is: 678,520.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    654,045.90 : 978,736.05 = 453,425.10 : x
  2. Step 2: Convert to fraction form
    654,045.90/978,736.05 = 453,425.10/x
  3. Step 3: Cross multiply
    654,045.90x = 978,736.05 × 453,425.10
  4. Step 4: Simplify right side
    654,045.90x = 443,783,491,344.86
  5. Step 5: Solve for x
    x = 443,783,491,344.86/654,045.90
  6. Step 6: Final answer
    x = 678,520.41

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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.