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Finding the Fourth Proportional to 398,619,109.40, 597,928,664.10 and 398,619,109.40

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Solution

The fourth proportional to 398,619,109.40, 597,928,664.10 and 398,619,109.40 is: 597,928,664.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,619,109.40 : 597,928,664.10 = 398,619,109.40 : x
  2. Step 2: Convert to fraction form
    398,619,109.40/597,928,664.10 = 398,619,109.40/x
  3. Step 3: Cross multiply
    398,619,109.40x = 597,928,664.10 × 398,619,109.40
  4. Step 4: Simplify right side
    398,619,109.40x = 238,345,791,568,273,760
  5. Step 5: Solve for x
    x = 238,345,791,568,273,760/398,619,109.40
  6. Step 6: Final answer
    x = 597,928,664.10

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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.