Home / 479,393,287.38-661,374,505.11-278,415,949.47

Finding the Fourth Proportional to 479,393,287.38, 661,374,505.11 and 278,415,949.47

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Solution

The fourth proportional to 479,393,287.38, 661,374,505.11 and 278,415,949.47 is: 384,104,691.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,393,287.38 : 661,374,505.11 = 278,415,949.47 : x
  2. Step 2: Convert to fraction form
    479,393,287.38/661,374,505.11 = 278,415,949.47/x
  3. Step 3: Cross multiply
    479,393,287.38x = 661,374,505.11 × 278,415,949.47
  4. Step 4: Simplify right side
    479,393,287.38x = 184,137,210,795,452,032
  5. Step 5: Solve for x
    x = 184,137,210,795,452,032/479,393,287.38
  6. Step 6: Final answer
    x = 384,104,691.58

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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.