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Finding the Fourth Proportional to 472,392,503.80, 708,588,755.70 and 395,864,999.80

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Solution

The fourth proportional to 472,392,503.80, 708,588,755.70 and 395,864,999.80 is: 593,797,499.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,392,503.80 : 708,588,755.70 = 395,864,999.80 : x
  2. Step 2: Convert to fraction form
    472,392,503.80/708,588,755.70 = 395,864,999.80/x
  3. Step 3: Cross multiply
    472,392,503.80x = 708,588,755.70 × 395,864,999.80
  4. Step 4: Simplify right side
    472,392,503.80x = 280,505,487,633,462,784
  5. Step 5: Solve for x
    x = 280,505,487,633,462,784/472,392,503.80
  6. Step 6: Final answer
    x = 593,797,499.70

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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.