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Finding the Fourth Proportional to 445,844,498.40, 668,129,018.40 and 328,342,893.30

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Solution

The fourth proportional to 445,844,498.40, 668,129,018.40 and 328,342,893.30 is: 492,044,683.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,844,498.40 : 668,129,018.40 = 328,342,893.30 : x
  2. Step 2: Convert to fraction form
    445,844,498.40/668,129,018.40 = 328,342,893.30/x
  3. Step 3: Cross multiply
    445,844,498.40x = 668,129,018.40 × 328,342,893.30
  4. Step 4: Simplify right side
    445,844,498.40x = 219,375,414,999,144,928
  5. Step 5: Solve for x
    x = 219,375,414,999,144,928/445,844,498.40
  6. Step 6: Final answer
    x = 492,044,683.26

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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.