Home / 1,278,443,505.72-1,917,750,289.14-449,296,868.28

Finding the Fourth Proportional to 1,278,443,505.72, 1,917,750,289.14 and 449,296,868.28

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Solution

The fourth proportional to 1,278,443,505.72, 1,917,750,289.14 and 449,296,868.28 is: 673,975,185.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,278,443,505.72 : 1,917,750,289.14 = 449,296,868.28 : x
  2. Step 2: Convert to fraction form
    1,278,443,505.72/1,917,750,289.14 = 449,296,868.28/x
  3. Step 3: Cross multiply
    1,278,443,505.72x = 1,917,750,289.14 × 449,296,868.28
  4. Step 4: Simplify right side
    1,278,443,505.72x = 861,639,199,053,666,432
  5. Step 5: Solve for x
    x = 861,639,199,053,666,432/1,278,443,505.72
  6. Step 6: Final answer
    x = 673,975,185.61

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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.