Home / 666,628,766.05-920,266,698.22-443,980,968.61

Finding the Fourth Proportional to 666,628,766.05, 920,266,698.22 and 443,980,968.61

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Solution

The fourth proportional to 666,628,766.05, 920,266,698.22 and 443,980,968.61 is: 612,906,194.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,628,766.05 : 920,266,698.22 = 443,980,968.61 : x
  2. Step 2: Convert to fraction form
    666,628,766.05/920,266,698.22 = 443,980,968.61/x
  3. Step 3: Cross multiply
    666,628,766.05x = 920,266,698.22 × 443,980,968.61
  4. Step 4: Simplify right side
    666,628,766.05x = 408,580,900,055,242,176
  5. Step 5: Solve for x
    x = 408,580,900,055,242,176/666,628,766.05
  6. Step 6: Final answer
    x = 612,906,194.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.