Home / 677,931.98-1,015,639.83-485,409.15

Finding the Fourth Proportional to 677,931.98, 1,015,639.83 and 485,409.15

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Solution

The fourth proportional to 677,931.98, 1,015,639.83 and 485,409.15 is: 727,212.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    677,931.98 : 1,015,639.83 = 485,409.15 : x
  2. Step 2: Convert to fraction form
    677,931.98/1,015,639.83 = 485,409.15/x
  3. Step 3: Cross multiply
    677,931.98x = 1,015,639.83 × 485,409.15
  4. Step 4: Simplify right side
    677,931.98x = 493,000,866,586.45
  5. Step 5: Solve for x
    x = 493,000,866,586.45/677,931.98
  6. Step 6: Final answer
    x = 727,212.88

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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.