Home / 445,932.20-668,898.30-396,943.40

Finding the Fourth Proportional to 445,932.20, 668,898.30 and 396,943.40

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Solution

The fourth proportional to 445,932.20, 668,898.30 and 396,943.40 is: 595,415.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,932.20 : 668,898.30 = 396,943.40 : x
  2. Step 2: Convert to fraction form
    445,932.20/668,898.30 = 396,943.40/x
  3. Step 3: Cross multiply
    445,932.20x = 668,898.30 × 396,943.40
  4. Step 4: Simplify right side
    445,932.20x = 265,514,765,456.22
  5. Step 5: Solve for x
    x = 265,514,765,456.22/445,932.20
  6. Step 6: Final answer
    x = 595,415.10

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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.