Home / 505,221,862.10-696,945,019.58-319,690,494.59

Finding the Fourth Proportional to 505,221,862.10, 696,945,019.58 and 319,690,494.59

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Solution

The fourth proportional to 505,221,862.10, 696,945,019.58 and 319,690,494.59 is: 441,007,633.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,221,862.10 : 696,945,019.58 = 319,690,494.59 : x
  2. Step 2: Convert to fraction form
    505,221,862.10/696,945,019.58 = 319,690,494.59/x
  3. Step 3: Cross multiply
    505,221,862.10x = 696,945,019.58 × 319,690,494.59
  4. Step 4: Simplify right side
    505,221,862.10x = 222,806,698,011,567,424
  5. Step 5: Solve for x
    x = 222,806,698,011,567,424/505,221,862.10
  6. Step 6: Final answer
    x = 441,007,633.92

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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.