Home / 809,859,067.38-1,117,599,948.96-438,572,602.26

Finding the Fourth Proportional to 809,859,067.38, 1,117,599,948.96 and 438,572,602.26

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Solution

The fourth proportional to 809,859,067.38, 1,117,599,948.96 and 438,572,602.26 is: 605,227,177.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,859,067.38 : 1,117,599,948.96 = 438,572,602.26 : x
  2. Step 2: Convert to fraction form
    809,859,067.38/1,117,599,948.96 = 438,572,602.26/x
  3. Step 3: Cross multiply
    809,859,067.38x = 1,117,599,948.96 × 438,572,602.26
  4. Step 4: Simplify right side
    809,859,067.38x = 490,148,717,901,030,400
  5. Step 5: Solve for x
    x = 490,148,717,901,030,400/809,859,067.38
  6. Step 6: Final answer
    x = 605,227,177.97

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1.5x scale

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.