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Finding the Fourth Proportional to 8,321,430.80, 12,463,483.80 and 6,828,438.80

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Solution

The fourth proportional to 8,321,430.80, 12,463,483.80 and 6,828,438.80 is: 10,227,344.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,321,430.80 : 12,463,483.80 = 6,828,438.80 : x
  2. Step 2: Convert to fraction form
    8,321,430.80/12,463,483.80 = 6,828,438.80/x
  3. Step 3: Cross multiply
    8,321,430.80x = 12,463,483.80 × 6,828,438.80
  4. Step 4: Simplify right side
    8,321,430.80x = 85,106,136,363,091.44
  5. Step 5: Solve for x
    x = 85,106,136,363,091.44/8,321,430.80
  6. Step 6: Final answer
    x = 10,227,344.12

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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.