Home / 285,686,651.76-428,585,135.40-121,922,018.16

Finding the Fourth Proportional to 285,686,651.76, 428,585,135.40 and 121,922,018.16

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Solution

The fourth proportional to 285,686,651.76, 428,585,135.40 and 121,922,018.16 is: 182,906,566.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,686,651.76 : 428,585,135.40 = 121,922,018.16 : x
  2. Step 2: Convert to fraction form
    285,686,651.76/428,585,135.40 = 121,922,018.16/x
  3. Step 3: Cross multiply
    285,686,651.76x = 428,585,135.40 × 121,922,018.16
  4. Step 4: Simplify right side
    285,686,651.76x = 52,253,964,661,344,856
  5. Step 5: Solve for x
    x = 52,253,964,661,344,856/285,686,651.76
  6. Step 6: Final answer
    x = 182,906,566.83

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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.