Home / 445,934.20-668,901.30-396,945.40

Finding the Fourth Proportional to 445,934.20, 668,901.30 and 396,945.40

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Solution

The fourth proportional to 445,934.20, 668,901.30 and 396,945.40 is: 595,418.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,934.20 : 668,901.30 = 396,945.40 : x
  2. Step 2: Convert to fraction form
    445,934.20/668,901.30 = 396,945.40/x
  3. Step 3: Cross multiply
    445,934.20x = 668,901.30 × 396,945.40
  4. Step 4: Simplify right side
    445,934.20x = 265,517,294,089.02
  5. Step 5: Solve for x
    x = 265,517,294,089.02/445,934.20
  6. Step 6: Final answer
    x = 595,418.10

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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.