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Finding the Fourth Proportional to 550,735.86, 758,599.38 and 389,313.30

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Solution

The fourth proportional to 550,735.86, 758,599.38 and 389,313.30 is: 536,251.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    550,735.86 : 758,599.38 = 389,313.30 : x
  2. Step 2: Convert to fraction form
    550,735.86/758,599.38 = 389,313.30/x
  3. Step 3: Cross multiply
    550,735.86x = 758,599.38 × 389,313.30
  4. Step 4: Simplify right side
    550,735.86x = 295,332,828,005.75
  5. Step 5: Solve for x
    x = 295,332,828,005.75/550,735.86
  6. Step 6: Final answer
    x = 536,251.31

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.