Home / 386,164,353.21-532,902,836.75-287,486,388.33

Finding the Fourth Proportional to 386,164,353.21, 532,902,836.75 and 287,486,388.33

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Solution

The fourth proportional to 386,164,353.21, 532,902,836.75 and 287,486,388.33 is: 396,728,259.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,164,353.21 : 532,902,836.75 = 287,486,388.33 : x
  2. Step 2: Convert to fraction form
    386,164,353.21/532,902,836.75 = 287,486,388.33/x
  3. Step 3: Cross multiply
    386,164,353.21x = 532,902,836.75 × 287,486,388.33
  4. Step 4: Simplify right side
    386,164,353.21x = 153,202,311,866,631,648
  5. Step 5: Solve for x
    x = 153,202,311,866,631,648/386,164,353.21
  6. Step 6: Final answer
    x = 396,728,259.85

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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.