Home / 1,379,557.56-2,069,647.80-420,099

Finding the Fourth Proportional to 1,379,557.56, 2,069,647.80 and 420,099

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Solution

The fourth proportional to 1,379,557.56, 2,069,647.80 and 420,099 is: 630,243.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,379,557.56 : 2,069,647.80 = 420,099 : x
  2. Step 2: Convert to fraction form
    1,379,557.56/2,069,647.80 = 420,099/x
  3. Step 3: Cross multiply
    1,379,557.56x = 2,069,647.80 × 420,099
  4. Step 4: Simplify right side
    1,379,557.56x = 869,456,971,132.20
  5. Step 5: Solve for x
    x = 869,456,971,132.20/1,379,557.56
  6. Step 6: Final answer
    x = 630,243.34

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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.