Home / 768,404,081.09-1,060,397,987.21-415,980,072.20

Finding the Fourth Proportional to 768,404,081.09, 1,060,397,987.21 and 415,980,072.20

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Solution

The fourth proportional to 768,404,081.09, 1,060,397,987.21 and 415,980,072.20 is: 574,052,691.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,404,081.09 : 1,060,397,987.21 = 415,980,072.20 : x
  2. Step 2: Convert to fraction form
    768,404,081.09/1,060,397,987.21 = 415,980,072.20/x
  3. Step 3: Cross multiply
    768,404,081.09x = 1,060,397,987.21 × 415,980,072.20
  4. Step 4: Simplify right side
    768,404,081.09x = 441,104,431,276,088,448
  5. Step 5: Solve for x
    x = 441,104,431,276,088,448/768,404,081.09
  6. Step 6: Final answer
    x = 574,052,691.98

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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.