Home / 520,979,608.98-718,972,078.80-286,040,171.70

Finding the Fourth Proportional to 520,979,608.98, 718,972,078.80 and 286,040,171.70

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Solution

The fourth proportional to 520,979,608.98, 718,972,078.80 and 286,040,171.70 is: 394,746,537.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,979,608.98 : 718,972,078.80 = 286,040,171.70 : x
  2. Step 2: Convert to fraction form
    520,979,608.98/718,972,078.80 = 286,040,171.70/x
  3. Step 3: Cross multiply
    520,979,608.98x = 718,972,078.80 × 286,040,171.70
  4. Step 4: Simplify right side
    520,979,608.98x = 205,654,896,867,457,920
  5. Step 5: Solve for x
    x = 205,654,896,867,457,920/520,979,608.98
  6. Step 6: Final answer
    x = 394,746,537.72

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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.