Home / 487,676.20-731,514.30-408,944.20

Finding the Fourth Proportional to 487,676.20, 731,514.30 and 408,944.20

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Solution

The fourth proportional to 487,676.20, 731,514.30 and 408,944.20 is: 613,416.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,676.20 : 731,514.30 = 408,944.20 : x
  2. Step 2: Convert to fraction form
    487,676.20/731,514.30 = 408,944.20/x
  3. Step 3: Cross multiply
    487,676.20x = 731,514.30 × 408,944.20
  4. Step 4: Simplify right side
    487,676.20x = 299,148,530,202.06
  5. Step 5: Solve for x
    x = 299,148,530,202.06/487,676.20
  6. Step 6: Final answer
    x = 613,416.30

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Half scale
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Double scale
Find fourth proportional to 487,677.20, 731,515.80 and 408,945.20
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.