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Finding the Fourth Proportional to 6,520,870.90, 9,781,738.35 and 1,728,493.30

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Solution

The fourth proportional to 6,520,870.90, 9,781,738.35 and 1,728,493.30 is: 2,592,854.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,520,870.90 : 9,781,738.35 = 1,728,493.30 : x
  2. Step 2: Convert to fraction form
    6,520,870.90/9,781,738.35 = 1,728,493.30/x
  3. Step 3: Cross multiply
    6,520,870.90x = 9,781,738.35 × 1,728,493.30
  4. Step 4: Simplify right side
    6,520,870.90x = 16,907,669,200,328.05
  5. Step 5: Solve for x
    x = 16,907,669,200,328.05/6,520,870.90
  6. Step 6: Final answer
    x = 2,592,854.46

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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.