Home / 496,640.08-685,435.53-278,873.20

Finding the Fourth Proportional to 496,640.08, 685,435.53 and 278,873.20

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Solution

The fourth proportional to 496,640.08, 685,435.53 and 278,873.20 is: 384,885.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    496,640.08 : 685,435.53 = 278,873.20 : x
  2. Step 2: Convert to fraction form
    496,640.08/685,435.53 = 278,873.20/x
  3. Step 3: Cross multiply
    496,640.08x = 685,435.53 × 278,873.20
  4. Step 4: Simplify right side
    496,640.08x = 191,149,599,644.80
  5. Step 5: Solve for x
    x = 191,149,599,644.80/496,640.08
  6. Step 6: Final answer
    x = 384,885.57

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1.5x scale

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.