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Finding the Fourth Proportional to 505,409.94, 758,111.85 and 126,328.77

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Solution

The fourth proportional to 505,409.94, 758,111.85 and 126,328.77 is: 189,492.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,409.94 : 758,111.85 = 126,328.77 : x
  2. Step 2: Convert to fraction form
    505,409.94/758,111.85 = 126,328.77/x
  3. Step 3: Cross multiply
    505,409.94x = 758,111.85 × 126,328.77
  4. Step 4: Simplify right side
    505,409.94x = 95,771,337,532.92
  5. Step 5: Solve for x
    x = 95,771,337,532.92/505,409.94
  6. Step 6: Final answer
    x = 189,492.39

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Similar ratio
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1.5x scale

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.