Home / 1,311,123.46-1,809,349.88-767,362.76

Finding the Fourth Proportional to 1,311,123.46, 1,809,349.88 and 767,362.76

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Solution

The fourth proportional to 1,311,123.46, 1,809,349.88 and 767,362.76 is: 1,058,960.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,311,123.46 : 1,809,349.88 = 767,362.76 : x
  2. Step 2: Convert to fraction form
    1,311,123.46/1,809,349.88 = 767,362.76/x
  3. Step 3: Cross multiply
    1,311,123.46x = 1,809,349.88 × 767,362.76
  4. Step 4: Simplify right side
    1,311,123.46x = 1,388,427,717,722.47
  5. Step 5: Solve for x
    x = 1,388,427,717,722.47/1,311,123.46
  6. Step 6: Final answer
    x = 1,058,960.32

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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.