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Finding the Fourth Proportional to 702,939,116.52, 970,055,965.38 and 389,672,536.68

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Solution

The fourth proportional to 702,939,116.52, 970,055,965.38 and 389,672,536.68 is: 537,748,092.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    702,939,116.52 : 970,055,965.38 = 389,672,536.68 : x
  2. Step 2: Convert to fraction form
    702,939,116.52/970,055,965.38 = 389,672,536.68/x
  3. Step 3: Cross multiply
    702,939,116.52x = 970,055,965.38 × 389,672,536.68
  4. Step 4: Simplify right side
    702,939,116.52x = 378,004,168,751,190,848
  5. Step 5: Solve for x
    x = 378,004,168,751,190,848/702,939,116.52
  6. Step 6: Final answer
    x = 537,748,092.07

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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.