Home / 5,120,121.71-7,680,180.13-1,525,796.93

Finding the Fourth Proportional to 5,120,121.71, 7,680,180.13 and 1,525,796.93

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Solution

The fourth proportional to 5,120,121.71, 7,680,180.13 and 1,525,796.93 is: 2,288,694.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,120,121.71 : 7,680,180.13 = 1,525,796.93 : x
  2. Step 2: Convert to fraction form
    5,120,121.71/7,680,180.13 = 1,525,796.93/x
  3. Step 3: Cross multiply
    5,120,121.71x = 7,680,180.13 × 1,525,796.93
  4. Step 4: Simplify right side
    5,120,121.71x = 11,718,395,221,985.61
  5. Step 5: Solve for x
    x = 11,718,395,221,985.61/5,120,121.71
  6. Step 6: Final answer
    x = 2,288,694.66

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.