Home / 1,787,288.80-2,680,933.20-665,125.60

Finding the Fourth Proportional to 1,787,288.80, 2,680,933.20 and 665,125.60

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Solution

The fourth proportional to 1,787,288.80, 2,680,933.20 and 665,125.60 is: 997,688.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,787,288.80 : 2,680,933.20 = 665,125.60 : x
  2. Step 2: Convert to fraction form
    1,787,288.80/2,680,933.20 = 665,125.60/x
  3. Step 3: Cross multiply
    1,787,288.80x = 2,680,933.20 × 665,125.60
  4. Step 4: Simplify right side
    1,787,288.80x = 1,783,157,303,209.92
  5. Step 5: Solve for x
    x = 1,783,157,303,209.92/1,787,288.80
  6. Step 6: Final answer
    x = 997,688.40

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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.