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Finding the Fourth Proportional to 445,502,605.40, 668,253,908.10 and 353,669,600.60

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Solution

The fourth proportional to 445,502,605.40, 668,253,908.10 and 353,669,600.60 is: 530,504,400.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,502,605.40 : 668,253,908.10 = 353,669,600.60 : x
  2. Step 2: Convert to fraction form
    445,502,605.40/668,253,908.10 = 353,669,600.60/x
  3. Step 3: Cross multiply
    445,502,605.40x = 668,253,908.10 × 353,669,600.60
  4. Step 4: Simplify right side
    445,502,605.40x = 236,341,092,777,116,128
  5. Step 5: Solve for x
    x = 236,341,092,777,116,128/445,502,605.40
  6. Step 6: Final answer
    x = 530,504,400.90

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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.