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Finding the Fourth Proportional to 6,489,875.61, 8,958,786.08 and 4,043,695.25

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Solution

The fourth proportional to 6,489,875.61, 8,958,786.08 and 4,043,695.25 is: 5,582,017.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,489,875.61 : 8,958,786.08 = 4,043,695.25 : x
  2. Step 2: Convert to fraction form
    6,489,875.61/8,958,786.08 = 4,043,695.25/x
  3. Step 3: Cross multiply
    6,489,875.61x = 8,958,786.08 × 4,043,695.25
  4. Step 4: Simplify right side
    6,489,875.61x = 36,226,600,669,247.44
  5. Step 5: Solve for x
    x = 36,226,600,669,247.44/6,489,875.61
  6. Step 6: Final answer
    x = 5,582,017.72

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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.