Home / 385,728,530,785.80-532,335,149,097.03-231,409,989,921.82

Finding the Fourth Proportional to 385,728,530,785.80, 532,335,149,097.03 and 231,409,989,921.82

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Solution

The fourth proportional to 385,728,530,785.80, 532,335,149,097.03 and 231,409,989,921.82 is: 319,363,649,965.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,728,530,785.80 : 532,335,149,097.03 = 231,409,989,921.82 : x
  2. Step 2: Convert to fraction form
    385,728,530,785.80/532,335,149,097.03 = 231,409,989,921.82/x
  3. Step 3: Cross multiply
    385,728,530,785.80x = 532,335,149,097.03 × 231,409,989,921.82
  4. Step 4: Simplify right side
    385,728,530,785.80x = 123,187,671,487,574,263,726,080
  5. Step 5: Solve for x
    x = 123,187,671,487,574,263,726,080/385,728,530,785.80
  6. Step 6: Final answer
    x = 319,363,649,965.48

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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.