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Finding the Fourth Proportional to 873,874.15, 1,311,125.83 and 305,338.88

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Solution

The fourth proportional to 873,874.15, 1,311,125.83 and 305,338.88 is: 458,118.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    873,874.15 : 1,311,125.83 = 305,338.88 : x
  2. Step 2: Convert to fraction form
    873,874.15/1,311,125.83 = 305,338.88/x
  3. Step 3: Cross multiply
    873,874.15x = 1,311,125.83 × 305,338.88
  4. Step 4: Simplify right side
    873,874.15x = 400,337,694,985.74
  5. Step 5: Solve for x
    x = 400,337,694,985.74/873,874.15
  6. Step 6: Final answer
    x = 458,118.25

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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.