Home / 1,247,721.40-1,868,082.90-1,212,729.40

Finding the Fourth Proportional to 1,247,721.40, 1,868,082.90 and 1,212,729.40

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Solution

The fourth proportional to 1,247,721.40, 1,868,082.90 and 1,212,729.40 is: 1,815,693.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,247,721.40 : 1,868,082.90 = 1,212,729.40 : x
  2. Step 2: Convert to fraction form
    1,247,721.40/1,868,082.90 = 1,212,729.40/x
  3. Step 3: Cross multiply
    1,247,721.40x = 1,868,082.90 × 1,212,729.40
  4. Step 4: Simplify right side
    1,247,721.40x = 2,265,479,054,467.26
  5. Step 5: Solve for x
    x = 2,265,479,054,467.26/1,247,721.40
  6. Step 6: Final answer
    x = 1,815,693.03

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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.