Home / 677,401.96-1,015,780.36-256,409.32

Finding the Fourth Proportional to 677,401.96, 1,015,780.36 and 256,409.32

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Solution

The fourth proportional to 677,401.96, 1,015,780.36 and 256,409.32 is: 384,491.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    677,401.96 : 1,015,780.36 = 256,409.32 : x
  2. Step 2: Convert to fraction form
    677,401.96/1,015,780.36 = 256,409.32/x
  3. Step 3: Cross multiply
    677,401.96x = 1,015,780.36 × 256,409.32
  4. Step 4: Simplify right side
    677,401.96x = 260,455,551,376.96
  5. Step 5: Solve for x
    x = 260,455,551,376.96/677,401.96
  6. Step 6: Final answer
    x = 384,491.88

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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.