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Finding the Fourth Proportional to 8,570,323.40, 12,830,601.90 and 8,321,491.40

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Solution

The fourth proportional to 8,570,323.40, 12,830,601.90 and 8,321,491.40 is: 12,458,076.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,570,323.40 : 12,830,601.90 = 8,321,491.40 : x
  2. Step 2: Convert to fraction form
    8,570,323.40/12,830,601.90 = 8,321,491.40/x
  3. Step 3: Cross multiply
    8,570,323.40x = 12,830,601.90 × 8,321,491.40
  4. Step 4: Simplify right side
    8,570,323.40x = 106,769,743,367,673.67
  5. Step 5: Solve for x
    x = 106,769,743,367,673.67/8,570,323.40
  6. Step 6: Final answer
    x = 12,458,076.36

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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.