Home / 495,917.85-684,318.75-278,135.48

Finding the Fourth Proportional to 495,917.85, 684,318.75 and 278,135.48

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Solution

The fourth proportional to 495,917.85, 684,318.75 and 278,135.48 is: 383,800.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    495,917.85 : 684,318.75 = 278,135.48 : x
  2. Step 2: Convert to fraction form
    495,917.85/684,318.75 = 278,135.48/x
  3. Step 3: Cross multiply
    495,917.85x = 684,318.75 × 278,135.48
  4. Step 4: Simplify right side
    495,917.85x = 190,333,324,004.25
  5. Step 5: Solve for x
    x = 190,333,324,004.25/495,917.85
  6. Step 6: Final answer
    x = 383,800.11

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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.