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Finding the Fourth Proportional to 985,676.10, 1,478,404.80 and 275,775.90

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Solution

The fourth proportional to 985,676.10, 1,478,404.80 and 275,775.90 is: 413,633.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    985,676.10 : 1,478,404.80 = 275,775.90 : x
  2. Step 2: Convert to fraction form
    985,676.10/1,478,404.80 = 275,775.90/x
  3. Step 3: Cross multiply
    985,676.10x = 1,478,404.80 × 275,775.90
  4. Step 4: Simplify right side
    985,676.10x = 407,708,414,284.32
  5. Step 5: Solve for x
    x = 407,708,414,284.32/985,676.10
  6. Step 6: Final answer
    x = 413,633.26

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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.