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Finding the Fourth Proportional to 398,654,800.70, 597,982,201.05 and 398,654,800.70

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Solution

The fourth proportional to 398,654,800.70, 597,982,201.05 and 398,654,800.70 is: 597,982,201.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,654,800.70 : 597,982,201.05 = 398,654,800.70 : x
  2. Step 2: Convert to fraction form
    398,654,800.70/597,982,201.05 = 398,654,800.70/x
  3. Step 3: Cross multiply
    398,654,800.70x = 597,982,201.05 × 398,654,800.70
  4. Step 4: Simplify right side
    398,654,800.70x = 238,388,475,181,735,040
  5. Step 5: Solve for x
    x = 238,388,475,181,735,040/398,654,800.70
  6. Step 6: Final answer
    x = 597,982,201.05

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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.