Home / 837,421.07-1,256,132.21-206,334.88

Finding the Fourth Proportional to 837,421.07, 1,256,132.21 and 206,334.88

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Solution

The fourth proportional to 837,421.07, 1,256,132.21 and 206,334.88 is: 309,502.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    837,421.07 : 1,256,132.21 = 206,334.88 : x
  2. Step 2: Convert to fraction form
    837,421.07/1,256,132.21 = 206,334.88/x
  3. Step 3: Cross multiply
    837,421.07x = 1,256,132.21 × 206,334.88
  4. Step 4: Simplify right side
    837,421.07x = 259,183,884,642.48
  5. Step 5: Solve for x
    x = 259,183,884,642.48/837,421.07
  6. Step 6: Final answer
    x = 309,502.47

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Double scale
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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.