Home / 1,288,890.56-1,778,668.08-715,984.04

Finding the Fourth Proportional to 1,288,890.56, 1,778,668.08 and 715,984.04

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Solution

The fourth proportional to 1,288,890.56, 1,778,668.08 and 715,984.04 is: 988,057.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,288,890.56 : 1,778,668.08 = 715,984.04 : x
  2. Step 2: Convert to fraction form
    1,288,890.56/1,778,668.08 = 715,984.04/x
  3. Step 3: Cross multiply
    1,288,890.56x = 1,778,668.08 × 715,984.04
  4. Step 4: Simplify right side
    1,288,890.56x = 1,273,497,957,737.44
  5. Step 5: Solve for x
    x = 1,273,497,957,737.44/1,288,890.56
  6. Step 6: Final answer
    x = 988,057.48

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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.