Home / 1,515,085,489,612.80-2,090,801,319,123.60-820,608,771,331.55

Finding the Fourth Proportional to 1,515,085,489,612.80, 2,090,801,319,123.60 and 820,608,771,331.55

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Solution

The fourth proportional to 1,515,085,489,612.80, 2,090,801,319,123.60 and 820,608,771,331.55 is: 1,132,431,082,831.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,515,085,489,612.80 : 2,090,801,319,123.60 = 820,608,771,331.55 : x
  2. Step 2: Convert to fraction form
    1,515,085,489,612.80/2,090,801,319,123.60 = 820,608,771,331.55/x
  3. Step 3: Cross multiply
    1,515,085,489,612.80x = 2,090,801,319,123.60 × 820,608,771,331.55
  4. Step 4: Simplify right side
    1,515,085,489,612.80x = 1,715,729,901,584,401,632,854,016
  5. Step 5: Solve for x
    x = 1,715,729,901,584,401,632,854,016/1,515,085,489,612.80
  6. Step 6: Final answer
    x = 1,132,431,082,831.42

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Double scale
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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.