Home / 406,609.20-560,789.28-286,149.60

Finding the Fourth Proportional to 406,609.20, 560,789.28 and 286,149.60

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Solution

The fourth proportional to 406,609.20, 560,789.28 and 286,149.60 is: 394,653.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    406,609.20 : 560,789.28 = 286,149.60 : x
  2. Step 2: Convert to fraction form
    406,609.20/560,789.28 = 286,149.60/x
  3. Step 3: Cross multiply
    406,609.20x = 560,789.28 × 286,149.60
  4. Step 4: Simplify right side
    406,609.20x = 160,469,628,156.29
  5. Step 5: Solve for x
    x = 160,469,628,156.29/406,609.20
  6. Step 6: Final answer
    x = 394,653.22

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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.