Home / 1,515,085,489,613.20-2,090,801,319,124.40-820,608,771,332.05

Finding the Fourth Proportional to 1,515,085,489,613.20, 2,090,801,319,124.40 and 820,608,771,332.05

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Solution

The fourth proportional to 1,515,085,489,613.20, 2,090,801,319,124.40 and 820,608,771,332.05 is: 1,132,431,082,832.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,515,085,489,613.20 : 2,090,801,319,124.40 = 820,608,771,332.05 : x
  2. Step 2: Convert to fraction form
    1,515,085,489,613.20/2,090,801,319,124.40 = 820,608,771,332.05/x
  3. Step 3: Cross multiply
    1,515,085,489,613.20x = 2,090,801,319,124.40 × 820,608,771,332.05
  4. Step 4: Simplify right side
    1,515,085,489,613.20x = 1,715,729,901,586,103,245,209,600
  5. Step 5: Solve for x
    x = 1,715,729,901,586,103,245,209,600/1,515,085,489,613.20
  6. Step 6: Final answer
    x = 1,132,431,082,832.25

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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.