Home / 445,930.20-668,895.30-396,941.40

Finding the Fourth Proportional to 445,930.20, 668,895.30 and 396,941.40

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Solution

The fourth proportional to 445,930.20, 668,895.30 and 396,941.40 is: 595,412.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,930.20 : 668,895.30 = 396,941.40 : x
  2. Step 2: Convert to fraction form
    445,930.20/668,895.30 = 396,941.40/x
  3. Step 3: Cross multiply
    445,930.20x = 668,895.30 × 396,941.40
  4. Step 4: Simplify right side
    445,930.20x = 265,512,236,835.42
  5. Step 5: Solve for x
    x = 265,512,236,835.42/445,930.20
  6. Step 6: Final answer
    x = 595,412.10

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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.