Home / 1,217,998,523.92-1,680,839,806.44-661,081,772.56

Finding the Fourth Proportional to 1,217,998,523.92, 1,680,839,806.44 and 661,081,772.56

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Solution

The fourth proportional to 1,217,998,523.92, 1,680,839,806.44 and 661,081,772.56 is: 912,293,846.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,217,998,523.92 : 1,680,839,806.44 = 661,081,772.56 : x
  2. Step 2: Convert to fraction form
    1,217,998,523.92/1,680,839,806.44 = 661,081,772.56/x
  3. Step 3: Cross multiply
    1,217,998,523.92x = 1,680,839,806.44 × 661,081,772.56
  4. Step 4: Simplify right side
    1,217,998,523.92x = 1,111,172,558,630,762,496
  5. Step 5: Solve for x
    x = 1,111,172,558,630,762,496/1,217,998,523.92
  6. Step 6: Final answer
    x = 912,293,846.67

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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.