Home / 1,515,711,912.78-2,091,685,681.26-855,662,190.78

Finding the Fourth Proportional to 1,515,711,912.78, 2,091,685,681.26 and 855,662,190.78

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Solution

The fourth proportional to 1,515,711,912.78, 2,091,685,681.26 and 855,662,190.78 is: 1,180,815,653.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,515,711,912.78 : 2,091,685,681.26 = 855,662,190.78 : x
  2. Step 2: Convert to fraction form
    1,515,711,912.78/2,091,685,681.26 = 855,662,190.78/x
  3. Step 3: Cross multiply
    1,515,711,912.78x = 2,091,685,681.26 × 855,662,190.78
  4. Step 4: Simplify right side
    1,515,711,912.78x = 1,789,776,352,450,088,448
  5. Step 5: Solve for x
    x = 1,789,776,352,450,088,448/1,515,711,912.78
  6. Step 6: Final answer
    x = 1,180,815,653.26

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1.5x scale

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.