Home / 640,960,066.60-961,440,099.90-447,090,389.80

Finding the Fourth Proportional to 640,960,066.60, 961,440,099.90 and 447,090,389.80

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Solution

The fourth proportional to 640,960,066.60, 961,440,099.90 and 447,090,389.80 is: 670,635,584.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,960,066.60 : 961,440,099.90 = 447,090,389.80 : x
  2. Step 2: Convert to fraction form
    640,960,066.60/961,440,099.90 = 447,090,389.80/x
  3. Step 3: Cross multiply
    640,960,066.60x = 961,440,099.90 × 447,090,389.80
  4. Step 4: Simplify right side
    640,960,066.60x = 429,850,629,033,641,920
  5. Step 5: Solve for x
    x = 429,850,629,033,641,920/640,960,066.60
  6. Step 6: Final answer
    x = 670,635,584.70

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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.