Home / 8,421,786.20-12,632,679.30-8,185,590.20

Finding the Fourth Proportional to 8,421,786.20, 12,632,679.30 and 8,185,590.20

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Solution

The fourth proportional to 8,421,786.20, 12,632,679.30 and 8,185,590.20 is: 12,278,385.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,421,786.20 : 12,632,679.30 = 8,185,590.20 : x
  2. Step 2: Convert to fraction form
    8,421,786.20/12,632,679.30 = 8,185,590.20/x
  3. Step 3: Cross multiply
    8,421,786.20x = 12,632,679.30 × 8,185,590.20
  4. Step 4: Simplify right side
    8,421,786.20x = 103,405,935,877,822.88
  5. Step 5: Solve for x
    x = 103,405,935,877,822.88/8,421,786.20
  6. Step 6: Final answer
    x = 12,278,385.30

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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.