Home / 1,276,631.28-1,912,555.80-1,145,178

Finding the Fourth Proportional to 1,276,631.28, 1,912,555.80 and 1,145,178

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Solution

The fourth proportional to 1,276,631.28, 1,912,555.80 and 1,145,178 is: 1,715,622.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,276,631.28 : 1,912,555.80 = 1,145,178 : x
  2. Step 2: Convert to fraction form
    1,276,631.28/1,912,555.80 = 1,145,178/x
  3. Step 3: Cross multiply
    1,276,631.28x = 1,912,555.80 × 1,145,178
  4. Step 4: Simplify right side
    1,276,631.28x = 2,190,216,825,932.40
  5. Step 5: Solve for x
    x = 2,190,216,825,932.40/1,276,631.28
  6. Step 6: Final answer
    x = 1,715,622.09

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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.