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Finding the Fourth Proportional to 6,287,664.72, 8,677,896.21 and 3,534,578.91

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Solution

The fourth proportional to 6,287,664.72, 8,677,896.21 and 3,534,578.91 is: 4,878,235.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,287,664.72 : 8,677,896.21 = 3,534,578.91 : x
  2. Step 2: Convert to fraction form
    6,287,664.72/8,677,896.21 = 3,534,578.91/x
  3. Step 3: Cross multiply
    6,287,664.72x = 8,677,896.21 × 3,534,578.91
  4. Step 4: Simplify right side
    6,287,664.72x = 30,672,708,927,034.94
  5. Step 5: Solve for x
    x = 30,672,708,927,034.94/6,287,664.72
  6. Step 6: Final answer
    x = 4,878,235.45

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.