Home / 911,838,844.43-1,258,338,681.47-494,151,129.72

Finding the Fourth Proportional to 911,838,844.43, 1,258,338,681.47 and 494,151,129.72

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Solution

The fourth proportional to 911,838,844.43, 1,258,338,681.47 and 494,151,129.72 is: 681,929,142.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    911,838,844.43 : 1,258,338,681.47 = 494,151,129.72 : x
  2. Step 2: Convert to fraction form
    911,838,844.43/1,258,338,681.47 = 494,151,129.72/x
  3. Step 3: Cross multiply
    911,838,844.43x = 1,258,338,681.47 × 494,151,129.72
  4. Step 4: Simplify right side
    911,838,844.43x = 621,809,481,016,305,024
  5. Step 5: Solve for x
    x = 621,809,481,016,305,024/911,838,844.43
  6. Step 6: Final answer
    x = 681,929,142.21

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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.