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Finding the Fourth Proportional to 940,457.92, 1,415,771.32 and 856,756

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Solution

The fourth proportional to 940,457.92, 1,415,771.32 and 856,756 is: 1,289,765.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    940,457.92 : 1,415,771.32 = 856,756 : x
  2. Step 2: Convert to fraction form
    940,457.92/1,415,771.32 = 856,756/x
  3. Step 3: Cross multiply
    940,457.92x = 1,415,771.32 × 856,756
  4. Step 4: Simplify right side
    940,457.92x = 1,212,970,573,037.92
  5. Step 5: Solve for x
    x = 1,212,970,573,037.92/940,457.92
  6. Step 6: Final answer
    x = 1,289,765.92

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.