Home / 1,493,251.20-2,239,876.80-428,400.90

Finding the Fourth Proportional to 1,493,251.20, 2,239,876.80 and 428,400.90

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Solution

The fourth proportional to 1,493,251.20, 2,239,876.80 and 428,400.90 is: 642,601.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,493,251.20 : 2,239,876.80 = 428,400.90 : x
  2. Step 2: Convert to fraction form
    1,493,251.20/2,239,876.80 = 428,400.90/x
  3. Step 3: Cross multiply
    1,493,251.20x = 2,239,876.80 × 428,400.90
  4. Step 4: Simplify right side
    1,493,251.20x = 959,565,237,009.12
  5. Step 5: Solve for x
    x = 959,565,237,009.12/1,493,251.20
  6. Step 6: Final answer
    x = 642,601.35

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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.