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Finding the Fourth Proportional to 419,689,625.60, 629,534,438.40 and 332,013,670.40

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Solution

The fourth proportional to 419,689,625.60, 629,534,438.40 and 332,013,670.40 is: 498,020,505.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,689,625.60 : 629,534,438.40 = 332,013,670.40 : x
  2. Step 2: Convert to fraction form
    419,689,625.60/629,534,438.40 = 332,013,670.40/x
  3. Step 3: Cross multiply
    419,689,625.60x = 629,534,438.40 × 332,013,670.40
  4. Step 4: Simplify right side
    419,689,625.60x = 209,014,039,536,386,688
  5. Step 5: Solve for x
    x = 209,014,039,536,386,688/419,689,625.60
  6. Step 6: Final answer
    x = 498,020,505.60

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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.