Home / 640,979,443.20-961,469,164.80-634,176,998.40

Finding the Fourth Proportional to 640,979,443.20, 961,469,164.80 and 634,176,998.40

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Solution

The fourth proportional to 640,979,443.20, 961,469,164.80 and 634,176,998.40 is: 951,265,497.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,979,443.20 : 961,469,164.80 = 634,176,998.40 : x
  2. Step 2: Convert to fraction form
    640,979,443.20/961,469,164.80 = 634,176,998.40/x
  3. Step 3: Cross multiply
    640,979,443.20x = 961,469,164.80 × 634,176,998.40
  4. Step 4: Simplify right side
    640,979,443.20x = 609,741,628,987,018,880
  5. Step 5: Solve for x
    x = 609,741,628,987,018,880/640,979,443.20
  6. Step 6: Final answer
    x = 951,265,497.60

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Half scale
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Double scale
Find fourth proportional to 640,979,444.20, 961,469,166.30 and 634,176,999.40
Similar ratio
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1.5x scale

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.