Home / 672,378,178.97-1,006,498,686.31-438,705,736.40

Finding the Fourth Proportional to 672,378,178.97, 1,006,498,686.31 and 438,705,736.40

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Solution

The fourth proportional to 672,378,178.97, 1,006,498,686.31 and 438,705,736.40 is: 656,708,919.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,378,178.97 : 1,006,498,686.31 = 438,705,736.40 : x
  2. Step 2: Convert to fraction form
    672,378,178.97/1,006,498,686.31 = 438,705,736.40/x
  3. Step 3: Cross multiply
    672,378,178.97x = 1,006,498,686.31 × 438,705,736.40
  4. Step 4: Simplify right side
    672,378,178.97x = 441,556,747,364,680,576
  5. Step 5: Solve for x
    x = 441,556,747,364,680,576/672,378,178.97
  6. Step 6: Final answer
    x = 656,708,919.43

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.