Home / 1,419,481.20-2,129,221.80-578,636.40

Finding the Fourth Proportional to 1,419,481.20, 2,129,221.80 and 578,636.40

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Solution

The fourth proportional to 1,419,481.20, 2,129,221.80 and 578,636.40 is: 867,954.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,419,481.20 : 2,129,221.80 = 578,636.40 : x
  2. Step 2: Convert to fraction form
    1,419,481.20/2,129,221.80 = 578,636.40/x
  3. Step 3: Cross multiply
    1,419,481.20x = 2,129,221.80 × 578,636.40
  4. Step 4: Simplify right side
    1,419,481.20x = 1,232,045,237,153.52
  5. Step 5: Solve for x
    x = 1,232,045,237,153.52/1,419,481.20
  6. Step 6: Final answer
    x = 867,954.60

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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.