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Finding the Fourth Proportional to 603,614,005.80, 905,421,008.70 and 215,449,499.40

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Solution

The fourth proportional to 603,614,005.80, 905,421,008.70 and 215,449,499.40 is: 323,174,249.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    603,614,005.80 : 905,421,008.70 = 215,449,499.40 : x
  2. Step 2: Convert to fraction form
    603,614,005.80/905,421,008.70 = 215,449,499.40/x
  3. Step 3: Cross multiply
    603,614,005.80x = 905,421,008.70 × 215,449,499.40
  4. Step 4: Simplify right side
    603,614,005.80x = 195,072,503,070,658,048
  5. Step 5: Solve for x
    x = 195,072,503,070,658,048/603,614,005.80
  6. Step 6: Final answer
    x = 323,174,249.10

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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.