Home / 1,297,189.78-1,790,004.09-724,124.50

Finding the Fourth Proportional to 1,297,189.78, 1,790,004.09 and 724,124.50

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Solution

The fourth proportional to 1,297,189.78, 1,790,004.09 and 724,124.50 is: 999,226.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,297,189.78 : 1,790,004.09 = 724,124.50 : x
  2. Step 2: Convert to fraction form
    1,297,189.78/1,790,004.09 = 724,124.50/x
  3. Step 3: Cross multiply
    1,297,189.78x = 1,790,004.09 × 724,124.50
  4. Step 4: Simplify right side
    1,297,189.78x = 1,296,185,816,669.21
  5. Step 5: Solve for x
    x = 1,296,185,816,669.21/1,297,189.78
  6. Step 6: Final answer
    x = 999,226.05

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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.