Home / 1,493,269.20-2,239,903.80-428,418.90

Finding the Fourth Proportional to 1,493,269.20, 2,239,903.80 and 428,418.90

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Solution

The fourth proportional to 1,493,269.20, 2,239,903.80 and 428,418.90 is: 642,628.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,493,269.20 : 2,239,903.80 = 428,418.90 : x
  2. Step 2: Convert to fraction form
    1,493,269.20/2,239,903.80 = 428,418.90/x
  3. Step 3: Cross multiply
    1,493,269.20x = 2,239,903.80 × 428,418.90
  4. Step 4: Simplify right side
    1,493,269.20x = 959,617,122,101.82
  5. Step 5: Solve for x
    x = 959,617,122,101.82/1,493,269.20
  6. Step 6: Final answer
    x = 642,628.35

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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.