Home / 647,959,145.92-893,854,198.07-393,572,808.51

Finding the Fourth Proportional to 647,959,145.92, 893,854,198.07 and 393,572,808.51

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Solution

The fourth proportional to 647,959,145.92, 893,854,198.07 and 393,572,808.51 is: 542,930,382.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,959,145.92 : 893,854,198.07 = 393,572,808.51 : x
  2. Step 2: Convert to fraction form
    647,959,145.92/893,854,198.07 = 393,572,808.51/x
  3. Step 3: Cross multiply
    647,959,145.92x = 893,854,198.07 × 393,572,808.51
  4. Step 4: Simplify right side
    647,959,145.92x = 351,796,707,132,863,744
  5. Step 5: Solve for x
    x = 351,796,707,132,863,744/647,959,145.92
  6. Step 6: Final answer
    x = 542,930,382.80

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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.