Home / 1,297,129.71-1,790,040.56-724,169.55

Finding the Fourth Proportional to 1,297,129.71, 1,790,040.56 and 724,169.55

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Solution

The fourth proportional to 1,297,129.71, 1,790,040.56 and 724,169.55 is: 999,354.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,297,129.71 : 1,790,040.56 = 724,169.55 : x
  2. Step 2: Convert to fraction form
    1,297,129.71/1,790,040.56 = 724,169.55/x
  3. Step 3: Cross multiply
    1,297,129.71x = 1,790,040.56 × 724,169.55
  4. Step 4: Simplify right side
    1,297,129.71x = 1,296,292,863,196.10
  5. Step 5: Solve for x
    x = 1,296,292,863,196.10/1,297,129.71
  6. Step 6: Final answer
    x = 999,354.85

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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.