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Finding the Fourth Proportional to 1,255,784.32, 1,732,957.84 and 682,819.36

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Solution

The fourth proportional to 1,255,784.32, 1,732,957.84 and 682,819.36 is: 942,277.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,255,784.32 : 1,732,957.84 = 682,819.36 : x
  2. Step 2: Convert to fraction form
    1,255,784.32/1,732,957.84 = 682,819.36/x
  3. Step 3: Cross multiply
    1,255,784.32x = 1,732,957.84 × 682,819.36
  4. Step 4: Simplify right side
    1,255,784.32x = 1,183,297,163,215.78
  5. Step 5: Solve for x
    x = 1,183,297,163,215.78/1,255,784.32
  6. Step 6: Final answer
    x = 942,277.38

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.