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Finding the Fourth Proportional to 6,642,874.40, 9,964,311.60 and 1,851,303.20

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Solution

The fourth proportional to 6,642,874.40, 9,964,311.60 and 1,851,303.20 is: 2,776,954.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,642,874.40 : 9,964,311.60 = 1,851,303.20 : x
  2. Step 2: Convert to fraction form
    6,642,874.40/9,964,311.60 = 1,851,303.20/x
  3. Step 3: Cross multiply
    6,642,874.40x = 9,964,311.60 × 1,851,303.20
  4. Step 4: Simplify right side
    6,642,874.40x = 18,446,961,950,877.12
  5. Step 5: Solve for x
    x = 18,446,961,950,877.12/6,642,874.40
  6. Step 6: Final answer
    x = 2,776,954.80

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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.