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Finding the Fourth Proportional to 8,661,356.32, 12,986,129.58 and 4,393,294.60

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Solution

The fourth proportional to 8,661,356.32, 12,986,129.58 and 4,393,294.60 is: 6,586,946.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,661,356.32 : 12,986,129.58 = 4,393,294.60 : x
  2. Step 2: Convert to fraction form
    8,661,356.32/12,986,129.58 = 4,393,294.60/x
  3. Step 3: Cross multiply
    8,661,356.32x = 12,986,129.58 × 4,393,294.60
  4. Step 4: Simplify right side
    8,661,356.32x = 57,051,892,958,714.27
  5. Step 5: Solve for x
    x = 57,051,892,958,714.27/8,661,356.32
  6. Step 6: Final answer
    x = 6,586,946.76

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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.