Home / 1,379,548.56-2,069,634.30-420,090

Finding the Fourth Proportional to 1,379,548.56, 2,069,634.30 and 420,090

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Solution

The fourth proportional to 1,379,548.56, 2,069,634.30 and 420,090 is: 630,229.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,379,548.56 : 2,069,634.30 = 420,090 : x
  2. Step 2: Convert to fraction form
    1,379,548.56/2,069,634.30 = 420,090/x
  3. Step 3: Cross multiply
    1,379,548.56x = 2,069,634.30 × 420,090
  4. Step 4: Simplify right side
    1,379,548.56x = 869,432,673,087
  5. Step 5: Solve for x
    x = 869,432,673,087/1,379,548.56
  6. Step 6: Final answer
    x = 630,229.84

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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.