Home / 640,979,074.20-961,468,611.30-634,176,629.40

Finding the Fourth Proportional to 640,979,074.20, 961,468,611.30 and 634,176,629.40

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Solution

The fourth proportional to 640,979,074.20, 961,468,611.30 and 634,176,629.40 is: 951,264,944.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,979,074.20 : 961,468,611.30 = 634,176,629.40 : x
  2. Step 2: Convert to fraction form
    640,979,074.20/961,468,611.30 = 634,176,629.40/x
  3. Step 3: Cross multiply
    640,979,074.20x = 961,468,611.30 × 634,176,629.40
  4. Step 4: Simplify right side
    640,979,074.20x = 609,740,923,188,132,736
  5. Step 5: Solve for x
    x = 609,740,923,188,132,736/640,979,074.20
  6. Step 6: Final answer
    x = 951,264,944.10

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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.