Home / 1,212,226.20-1,818,857.70-763,291.80

Finding the Fourth Proportional to 1,212,226.20, 1,818,857.70 and 763,291.80

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Solution

The fourth proportional to 1,212,226.20, 1,818,857.70 and 763,291.80 is: 1,145,264.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,212,226.20 : 1,818,857.70 = 763,291.80 : x
  2. Step 2: Convert to fraction form
    1,212,226.20/1,818,857.70 = 763,291.80/x
  3. Step 3: Cross multiply
    1,212,226.20x = 1,818,857.70 × 763,291.80
  4. Step 4: Simplify right side
    1,212,226.20x = 1,388,319,167,776.86
  5. Step 5: Solve for x
    x = 1,388,319,167,776.86/1,212,226.20
  6. Step 6: Final answer
    x = 1,145,264.12

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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.