Home / 8,320,821.40-12,481,232.10-6,641,205.40

Finding the Fourth Proportional to 8,320,821.40, 12,481,232.10 and 6,641,205.40

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Solution

The fourth proportional to 8,320,821.40, 12,481,232.10 and 6,641,205.40 is: 9,961,808.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,320,821.40 : 12,481,232.10 = 6,641,205.40 : x
  2. Step 2: Convert to fraction form
    8,320,821.40/12,481,232.10 = 6,641,205.40/x
  3. Step 3: Cross multiply
    8,320,821.40x = 12,481,232.10 × 6,641,205.40
  4. Step 4: Simplify right side
    8,320,821.40x = 82,890,426,021,173.34
  5. Step 5: Solve for x
    x = 82,890,426,021,173.34/8,320,821.40
  6. Step 6: Final answer
    x = 9,961,808.10

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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.