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Finding the Fourth Proportional to 13,026,303.60, 17,978,451.30 and 7,226,953.80

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Solution

The fourth proportional to 13,026,303.60, 17,978,451.30 and 7,226,953.80 is: 9,974,390.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,026,303.60 : 17,978,451.30 = 7,226,953.80 : x
  2. Step 2: Convert to fraction form
    13,026,303.60/17,978,451.30 = 7,226,953.80/x
  3. Step 3: Cross multiply
    13,026,303.60x = 17,978,451.30 × 7,226,953.80
  4. Step 4: Simplify right side
    13,026,303.60x = 129,929,436,940,649.94
  5. Step 5: Solve for x
    x = 129,929,436,940,649.94/13,026,303.60
  6. Step 6: Final answer
    x = 9,974,390.35

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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.