Home / 639,207,470.52-882,011,732.94-388,181,316.60

Finding the Fourth Proportional to 639,207,470.52, 882,011,732.94 and 388,181,316.60

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Solution

The fourth proportional to 639,207,470.52, 882,011,732.94 and 388,181,316.60 is: 535,632,782.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,207,470.52 : 882,011,732.94 = 388,181,316.60 : x
  2. Step 2: Convert to fraction form
    639,207,470.52/882,011,732.94 = 388,181,316.60/x
  3. Step 3: Cross multiply
    639,207,470.52x = 882,011,732.94 × 388,181,316.60
  4. Step 4: Simplify right side
    639,207,470.52x = 342,380,475,749,296,832
  5. Step 5: Solve for x
    x = 342,380,475,749,296,832/639,207,470.52
  6. Step 6: Final answer
    x = 535,632,782.06

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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.