Home / 640,519,473.60-958,866,022.80-381,601,418.40

Finding the Fourth Proportional to 640,519,473.60, 958,866,022.80 and 381,601,418.40

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Solution

The fourth proportional to 640,519,473.60, 958,866,022.80 and 381,601,418.40 is: 571,262,310.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,519,473.60 : 958,866,022.80 = 381,601,418.40 : x
  2. Step 2: Convert to fraction form
    640,519,473.60/958,866,022.80 = 381,601,418.40/x
  3. Step 3: Cross multiply
    640,519,473.60x = 958,866,022.80 × 381,601,418.40
  4. Step 4: Simplify right side
    640,519,473.60x = 365,904,634,356,046,720
  5. Step 5: Solve for x
    x = 365,904,634,356,046,720/640,519,473.60
  6. Step 6: Final answer
    x = 571,262,310.42

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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.