Home / 1,388,290.50-1,915,760.97-768,058.38

Finding the Fourth Proportional to 1,388,290.50, 1,915,760.97 and 768,058.38

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Solution

The fourth proportional to 1,388,290.50, 1,915,760.97 and 768,058.38 is: 1,059,876.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,388,290.50 : 1,915,760.97 = 768,058.38 : x
  2. Step 2: Convert to fraction form
    1,388,290.50/1,915,760.97 = 768,058.38/x
  3. Step 3: Cross multiply
    1,388,290.50x = 1,915,760.97 × 768,058.38
  4. Step 4: Simplify right side
    1,388,290.50x = 1,471,416,267,085.43
  5. Step 5: Solve for x
    x = 1,471,416,267,085.43/1,388,290.50
  6. Step 6: Final answer
    x = 1,059,876.35

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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.