Home / 380,902,935.12-525,651,497.74-285,364,162.70

Finding the Fourth Proportional to 380,902,935.12, 525,651,497.74 and 285,364,162.70

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Solution

The fourth proportional to 380,902,935.12, 525,651,497.74 and 285,364,162.70 is: 393,806,625.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,902,935.12 : 525,651,497.74 = 285,364,162.70 : x
  2. Step 2: Convert to fraction form
    380,902,935.12/525,651,497.74 = 285,364,162.70/x
  3. Step 3: Cross multiply
    380,902,935.12x = 525,651,497.74 × 285,364,162.70
  4. Step 4: Simplify right side
    380,902,935.12x = 150,002,099,526,433,696
  5. Step 5: Solve for x
    x = 150,002,099,526,433,696/380,902,935.12
  6. Step 6: Final answer
    x = 393,806,625.51

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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.