Home / 1,296,122.20-1,787,321.32-860,385.84

Finding the Fourth Proportional to 1,296,122.20, 1,787,321.32 and 860,385.84

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Solution

The fourth proportional to 1,296,122.20, 1,787,321.32 and 860,385.84 is: 1,186,451.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,296,122.20 : 1,787,321.32 = 860,385.84 : x
  2. Step 2: Convert to fraction form
    1,296,122.20/1,787,321.32 = 860,385.84/x
  3. Step 3: Cross multiply
    1,296,122.20x = 1,787,321.32 × 860,385.84
  4. Step 4: Simplify right side
    1,296,122.20x = 1,537,785,955,258.11
  5. Step 5: Solve for x
    x = 1,537,785,955,258.11/1,296,122.20
  6. Step 6: Final answer
    x = 1,186,451.37

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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.