Home / 1,028,890.20-1,419,395.76-666,435

Finding the Fourth Proportional to 1,028,890.20, 1,419,395.76 and 666,435

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Solution

The fourth proportional to 1,028,890.20, 1,419,395.76 and 666,435 is: 919,374.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,028,890.20 : 1,419,395.76 = 666,435 : x
  2. Step 2: Convert to fraction form
    1,028,890.20/1,419,395.76 = 666,435/x
  3. Step 3: Cross multiply
    1,028,890.20x = 1,419,395.76 × 666,435
  4. Step 4: Simplify right side
    1,028,890.20x = 945,935,013,315.60
  5. Step 5: Solve for x
    x = 945,935,013,315.60/1,028,890.20
  6. Step 6: Final answer
    x = 919,374.11

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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.