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Finding the Fourth Proportional to 986,865.80, 1,477,674.30 and 629,947.40

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Solution

The fourth proportional to 986,865.80, 1,477,674.30 and 629,947.40 is: 943,245.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    986,865.80 : 1,477,674.30 = 629,947.40 : x
  2. Step 2: Convert to fraction form
    986,865.80/1,477,674.30 = 629,947.40/x
  3. Step 3: Cross multiply
    986,865.80x = 1,477,674.30 × 629,947.40
  4. Step 4: Simplify right side
    986,865.80x = 930,857,083,331.82
  5. Step 5: Solve for x
    x = 930,857,083,331.82/986,865.80
  6. Step 6: Final answer
    x = 943,245.86

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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.