Home / 447,384.40-670,639.20-400,145.20

Finding the Fourth Proportional to 447,384.40, 670,639.20 and 400,145.20

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Solution

The fourth proportional to 447,384.40, 670,639.20 and 400,145.20 is: 599,826.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,384.40 : 670,639.20 = 400,145.20 : x
  2. Step 2: Convert to fraction form
    447,384.40/670,639.20 = 400,145.20/x
  3. Step 3: Cross multiply
    447,384.40x = 670,639.20 × 400,145.20
  4. Step 4: Simplify right side
    447,384.40x = 268,353,056,811.84
  5. Step 5: Solve for x
    x = 268,353,056,811.84/447,384.40
  6. Step 6: Final answer
    x = 599,826.58

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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.