Home / 641,040,068.40-961,560,102.60-399,175,364.40

Finding the Fourth Proportional to 641,040,068.40, 961,560,102.60 and 399,175,364.40

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Solution

The fourth proportional to 641,040,068.40, 961,560,102.60 and 399,175,364.40 is: 598,763,046.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,040,068.40 : 961,560,102.60 = 399,175,364.40 : x
  2. Step 2: Convert to fraction form
    641,040,068.40/961,560,102.60 = 399,175,364.40/x
  3. Step 3: Cross multiply
    641,040,068.40x = 961,560,102.60 × 399,175,364.40
  4. Step 4: Simplify right side
    641,040,068.40x = 383,831,104,347,856,384
  5. Step 5: Solve for x
    x = 383,831,104,347,856,384/641,040,068.40
  6. Step 6: Final answer
    x = 598,763,046.60

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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.