Home / 1,212,320.13-1,818,489.30-538,219.90

Finding the Fourth Proportional to 1,212,320.13, 1,818,489.30 and 538,219.90

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Solution

The fourth proportional to 1,212,320.13, 1,818,489.30 and 538,219.90 is: 807,333.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,212,320.13 : 1,818,489.30 = 538,219.90 : x
  2. Step 2: Convert to fraction form
    1,212,320.13/1,818,489.30 = 538,219.90/x
  3. Step 3: Cross multiply
    1,212,320.13x = 1,818,489.30 × 538,219.90
  4. Step 4: Simplify right side
    1,212,320.13x = 978,747,129,197.07
  5. Step 5: Solve for x
    x = 978,747,129,197.07/1,212,320.13
  6. Step 6: Final answer
    x = 807,333.89

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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.