Home / 1,328,178.28-1,992,523.40-429,842.92

Finding the Fourth Proportional to 1,328,178.28, 1,992,523.40 and 429,842.92

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Solution

The fourth proportional to 1,328,178.28, 1,992,523.40 and 429,842.92 is: 644,847.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,328,178.28 : 1,992,523.40 = 429,842.92 : x
  2. Step 2: Convert to fraction form
    1,328,178.28/1,992,523.40 = 429,842.92/x
  3. Step 3: Cross multiply
    1,328,178.28x = 1,992,523.40 × 429,842.92
  4. Step 4: Simplify right side
    1,328,178.28x = 856,472,076,424.33
  5. Step 5: Solve for x
    x = 856,472,076,424.33/1,328,178.28
  6. Step 6: Final answer
    x = 644,847.22

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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.