Home / 1,247,589.90-1,867,885.65-1,212,597.90

Finding the Fourth Proportional to 1,247,589.90, 1,867,885.65 and 1,212,597.90

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Solution

The fourth proportional to 1,247,589.90, 1,867,885.65 and 1,212,597.90 is: 1,815,495.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,247,589.90 : 1,867,885.65 = 1,212,597.90 : x
  2. Step 2: Convert to fraction form
    1,247,589.90/1,867,885.65 = 1,212,597.90/x
  3. Step 3: Cross multiply
    1,247,589.90x = 1,867,885.65 × 1,212,597.90
  4. Step 4: Simplify right side
    1,247,589.90x = 2,264,994,216,630.13
  5. Step 5: Solve for x
    x = 2,264,994,216,630.13/1,247,589.90
  6. Step 6: Final answer
    x = 1,815,495.79

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.