Home / 672,021.20-1,008,031.80-423,189.20

Finding the Fourth Proportional to 672,021.20, 1,008,031.80 and 423,189.20

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Solution

The fourth proportional to 672,021.20, 1,008,031.80 and 423,189.20 is: 634,783.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,021.20 : 1,008,031.80 = 423,189.20 : x
  2. Step 2: Convert to fraction form
    672,021.20/1,008,031.80 = 423,189.20/x
  3. Step 3: Cross multiply
    672,021.20x = 1,008,031.80 × 423,189.20
  4. Step 4: Simplify right side
    672,021.20x = 426,588,171,016.56
  5. Step 5: Solve for x
    x = 426,588,171,016.56/672,021.20
  6. Step 6: Final answer
    x = 634,783.80

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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.