Home / 1,311,211.92-1,967,155.92-712,019.28

Finding the Fourth Proportional to 1,311,211.92, 1,967,155.92 and 712,019.28

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Solution

The fourth proportional to 1,311,211.92, 1,967,155.92 and 712,019.28 is: 1,068,212.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,311,211.92 : 1,967,155.92 = 712,019.28 : x
  2. Step 2: Convert to fraction form
    1,311,211.92/1,967,155.92 = 712,019.28/x
  3. Step 3: Cross multiply
    1,311,211.92x = 1,967,155.92 × 712,019.28
  4. Step 4: Simplify right side
    1,311,211.92x = 1,400,652,941,806.14
  5. Step 5: Solve for x
    x = 1,400,652,941,806.14/1,311,211.92
  6. Step 6: Final answer
    x = 1,068,212.48

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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.