Home / 911,839,001.55-1,258,338,898.31-494,151,286.85

Finding the Fourth Proportional to 911,839,001.55, 1,258,338,898.31 and 494,151,286.85

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Solution

The fourth proportional to 911,839,001.55, 1,258,338,898.31 and 494,151,286.85 is: 681,929,359.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    911,839,001.55 : 1,258,338,898.31 = 494,151,286.85 : x
  2. Step 2: Convert to fraction form
    911,839,001.55/1,258,338,898.31 = 494,151,286.85/x
  3. Step 3: Cross multiply
    911,839,001.55x = 1,258,338,898.31 × 494,151,286.85
  4. Step 4: Simplify right side
    911,839,001.55x = 621,809,785,884,535,424
  5. Step 5: Solve for x
    x = 621,809,785,884,535,424/911,839,001.55
  6. Step 6: Final answer
    x = 681,929,359.05

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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.