Home / 911,839,115.65-1,258,339,055.97-494,151,400.97

Finding the Fourth Proportional to 911,839,115.65, 1,258,339,055.97 and 494,151,400.97

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Solution

The fourth proportional to 911,839,115.65, 1,258,339,055.97 and 494,151,400.97 is: 681,929,516.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    911,839,115.65 : 1,258,339,055.97 = 494,151,400.97 : x
  2. Step 2: Convert to fraction form
    911,839,115.65/1,258,339,055.97 = 494,151,400.97/x
  3. Step 3: Cross multiply
    911,839,115.65x = 1,258,339,055.97 × 494,151,400.97
  4. Step 4: Simplify right side
    911,839,115.65x = 621,810,007,402,842,752
  5. Step 5: Solve for x
    x = 621,810,007,402,842,752/911,839,115.65
  6. Step 6: Final answer
    x = 681,929,516.66

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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.