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Finding the Fourth Proportional to 502,451.10, 753,676.65 and 455,211.90

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Solution

The fourth proportional to 502,451.10, 753,676.65 and 455,211.90 is: 682,817.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    502,451.10 : 753,676.65 = 455,211.90 : x
  2. Step 2: Convert to fraction form
    502,451.10/753,676.65 = 455,211.90/x
  3. Step 3: Cross multiply
    502,451.10x = 753,676.65 × 455,211.90
  4. Step 4: Simplify right side
    502,451.10x = 343,082,579,832.14
  5. Step 5: Solve for x
    x = 343,082,579,832.14/502,451.10
  6. Step 6: Final answer
    x = 682,817.85

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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.