Home / 1,115,879.76-1,540,082.43-680,549.72

Finding the Fourth Proportional to 1,115,879.76, 1,540,082.43 and 680,549.72

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Solution

The fourth proportional to 1,115,879.76, 1,540,082.43 and 680,549.72 is: 939,261.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,115,879.76 : 1,540,082.43 = 680,549.72 : x
  2. Step 2: Convert to fraction form
    1,115,879.76/1,540,082.43 = 680,549.72/x
  3. Step 3: Cross multiply
    1,115,879.76x = 1,540,082.43 × 680,549.72
  4. Step 4: Simplify right side
    1,115,879.76x = 1,048,102,658,813.01
  5. Step 5: Solve for x
    x = 1,048,102,658,813.01/1,115,879.76
  6. Step 6: Final answer
    x = 939,261.29

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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.