Home / 1,297,228.73-1,790,179.11-724,289.40

Finding the Fourth Proportional to 1,297,228.73, 1,790,179.11 and 724,289.40

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Solution

The fourth proportional to 1,297,228.73, 1,790,179.11 and 724,289.40 is: 999,521.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,297,228.73 : 1,790,179.11 = 724,289.40 : x
  2. Step 2: Convert to fraction form
    1,297,228.73/1,790,179.11 = 724,289.40/x
  3. Step 3: Cross multiply
    1,297,228.73x = 1,790,179.11 × 724,289.40
  4. Step 4: Simplify right side
    1,297,228.73x = 1,296,607,753,474.43
  5. Step 5: Solve for x
    x = 1,296,607,753,474.43/1,297,228.73
  6. Step 6: Final answer
    x = 999,521.31

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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.