Home / 1,425,210.72-2,137,764.24-427,912.80

Finding the Fourth Proportional to 1,425,210.72, 2,137,764.24 and 427,912.80

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Solution

The fourth proportional to 1,425,210.72, 2,137,764.24 and 427,912.80 is: 641,853.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,425,210.72 : 2,137,764.24 = 427,912.80 : x
  2. Step 2: Convert to fraction form
    1,425,210.72/2,137,764.24 = 427,912.80/x
  3. Step 3: Cross multiply
    1,425,210.72x = 2,137,764.24 × 427,912.80
  4. Step 4: Simplify right side
    1,425,210.72x = 914,776,681,678.27
  5. Step 5: Solve for x
    x = 914,776,681,678.27/1,425,210.72
  6. Step 6: Final answer
    x = 641,853.64

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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.