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Finding the Fourth Proportional to 398,655,768.30, 597,983,652.45 and 398,655,768.30

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Solution

The fourth proportional to 398,655,768.30, 597,983,652.45 and 398,655,768.30 is: 597,983,652.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,655,768.30 : 597,983,652.45 = 398,655,768.30 : x
  2. Step 2: Convert to fraction form
    398,655,768.30/597,983,652.45 = 398,655,768.30/x
  3. Step 3: Cross multiply
    398,655,768.30x = 597,983,652.45 × 398,655,768.30
  4. Step 4: Simplify right side
    398,655,768.30x = 238,389,632,398,294,944
  5. Step 5: Solve for x
    x = 238,389,632,398,294,944/398,655,768.30
  6. Step 6: Final answer
    x = 597,983,652.45

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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.