Home / 1,120,253,812.80-1,680,319,975.68-343,899,605.76

Finding the Fourth Proportional to 1,120,253,812.80, 1,680,319,975.68 and 343,899,605.76

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Solution

The fourth proportional to 1,120,253,812.80, 1,680,319,975.68 and 343,899,605.76 is: 515,830,761.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,120,253,812.80 : 1,680,319,975.68 = 343,899,605.76 : x
  2. Step 2: Convert to fraction form
    1,120,253,812.80/1,680,319,975.68 = 343,899,605.76/x
  3. Step 3: Cross multiply
    1,120,253,812.80x = 1,680,319,975.68 × 343,899,605.76
  4. Step 4: Simplify right side
    1,120,253,812.80x = 577,861,377,187,004,800
  5. Step 5: Solve for x
    x = 577,861,377,187,004,800/1,120,253,812.80
  6. Step 6: Final answer
    x = 515,830,761.37

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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.