Home / 639,342,407,711.72-959,072,562,561.50-209,081,724,258.28

Finding the Fourth Proportional to 639,342,407,711.72, 959,072,562,561.50 and 209,081,724,258.28

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Solution

The fourth proportional to 639,342,407,711.72, 959,072,562,561.50 and 209,081,724,258.28 is: 313,641,864,907.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,342,407,711.72 : 959,072,562,561.50 = 209,081,724,258.28 : x
  2. Step 2: Convert to fraction form
    639,342,407,711.72/959,072,562,561.50 = 209,081,724,258.28/x
  3. Step 3: Cross multiply
    639,342,407,711.72x = 959,072,562,561.50 × 209,081,724,258.28
  4. Step 4: Simplify right side
    639,342,407,711.72x = 200,524,545,069,165,544,734,720
  5. Step 5: Solve for x
    x = 200,524,545,069,165,544,734,720/639,342,407,711.72
  6. Step 6: Final answer
    x = 313,641,864,907.52

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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.