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Finding the Fourth Proportional to 606,238,807.80, 909,358,211.70 and 261,581,604.60

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Solution

The fourth proportional to 606,238,807.80, 909,358,211.70 and 261,581,604.60 is: 392,372,406.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    606,238,807.80 : 909,358,211.70 = 261,581,604.60 : x
  2. Step 2: Convert to fraction form
    606,238,807.80/909,358,211.70 = 261,581,604.60/x
  3. Step 3: Cross multiply
    606,238,807.80x = 909,358,211.70 × 261,581,604.60
  4. Step 4: Simplify right side
    606,238,807.80x = 237,871,380,172,672,512
  5. Step 5: Solve for x
    x = 237,871,380,172,672,512/606,238,807.80
  6. Step 6: Final answer
    x = 392,372,406.90

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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.