Home / 640,979,079.20-961,468,618.80-634,176,634.40

Finding the Fourth Proportional to 640,979,079.20, 961,468,618.80 and 634,176,634.40

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Solution

The fourth proportional to 640,979,079.20, 961,468,618.80 and 634,176,634.40 is: 951,264,951.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,979,079.20 : 961,468,618.80 = 634,176,634.40 : x
  2. Step 2: Convert to fraction form
    640,979,079.20/961,468,618.80 = 634,176,634.40/x
  3. Step 3: Cross multiply
    640,979,079.20x = 961,468,618.80 × 634,176,634.40
  4. Step 4: Simplify right side
    640,979,079.20x = 609,740,932,751,800,576
  5. Step 5: Solve for x
    x = 609,740,932,751,800,576/640,979,079.20
  6. Step 6: Final answer
    x = 951,264,951.60

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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.