Home / 525,120,343.75-787,816,705.57-279,274,818.61

Finding the Fourth Proportional to 525,120,343.75, 787,816,705.57 and 279,274,818.61

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Solution

The fourth proportional to 525,120,343.75, 787,816,705.57 and 279,274,818.61 is: 418,984,657.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,120,343.75 : 787,816,705.57 = 279,274,818.61 : x
  2. Step 2: Convert to fraction form
    525,120,343.75/787,816,705.57 = 279,274,818.61/x
  3. Step 3: Cross multiply
    525,120,343.75x = 787,816,705.57 × 279,274,818.61
  4. Step 4: Simplify right side
    525,120,343.75x = 220,017,367,545,989,568
  5. Step 5: Solve for x
    x = 220,017,367,545,989,568/525,120,343.75
  6. Step 6: Final answer
    x = 418,984,657.83

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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.