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Finding the Fourth Proportional to 442,980.30, 664,470.45 and 396,324.30

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Solution

The fourth proportional to 442,980.30, 664,470.45 and 396,324.30 is: 594,486.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,980.30 : 664,470.45 = 396,324.30 : x
  2. Step 2: Convert to fraction form
    442,980.30/664,470.45 = 396,324.30/x
  3. Step 3: Cross multiply
    442,980.30x = 664,470.45 × 396,324.30
  4. Step 4: Simplify right side
    442,980.30x = 263,345,785,966.94
  5. Step 5: Solve for x
    x = 263,345,785,966.94/442,980.30
  6. Step 6: Final answer
    x = 594,486.45

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1.5x scale

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.