Home / 1,278,509.32-1,917,972.06-479,853.64

Finding the Fourth Proportional to 1,278,509.32, 1,917,972.06 and 479,853.64

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Solution

The fourth proportional to 1,278,509.32, 1,917,972.06 and 479,853.64 is: 719,858.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,278,509.32 : 1,917,972.06 = 479,853.64 : x
  2. Step 2: Convert to fraction form
    1,278,509.32/1,917,972.06 = 479,853.64/x
  3. Step 3: Cross multiply
    1,278,509.32x = 1,917,972.06 × 479,853.64
  4. Step 4: Simplify right side
    1,278,509.32x = 920,345,874,409.30
  5. Step 5: Solve for x
    x = 920,345,874,409.30/1,278,509.32
  6. Step 6: Final answer
    x = 719,858.56

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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.