Home / 522,049,173.78-720,413,470.62-287,099,828.58

Finding the Fourth Proportional to 522,049,173.78, 720,413,470.62 and 287,099,828.58

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Solution

The fourth proportional to 522,049,173.78, 720,413,470.62 and 287,099,828.58 is: 396,189,850.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,049,173.78 : 720,413,470.62 = 287,099,828.58 : x
  2. Step 2: Convert to fraction form
    522,049,173.78/720,413,470.62 = 287,099,828.58/x
  3. Step 3: Cross multiply
    522,049,173.78x = 720,413,470.62 × 287,099,828.58
  4. Step 4: Simplify right side
    522,049,173.78x = 206,830,583,921,724,864
  5. Step 5: Solve for x
    x = 206,830,583,921,724,864/522,049,173.78
  6. Step 6: Final answer
    x = 396,189,850.13

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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.