Home / 718,890,638,270.44-992,100,265,771.04-398,106,473,378.36

Finding the Fourth Proportional to 718,890,638,270.44, 992,100,265,771.04 and 398,106,473,378.36

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Solution

The fourth proportional to 718,890,638,270.44, 992,100,265,771.04 and 398,106,473,378.36 is: 549,404,202,834.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,890,638,270.44 : 992,100,265,771.04 = 398,106,473,378.36 : x
  2. Step 2: Convert to fraction form
    718,890,638,270.44/992,100,265,771.04 = 398,106,473,378.36/x
  3. Step 3: Cross multiply
    718,890,638,270.44x = 992,100,265,771.04 × 398,106,473,378.36
  4. Step 4: Simplify right side
    718,890,638,270.44x = 394,961,538,043,842,391,965,696
  5. Step 5: Solve for x
    x = 394,961,538,043,842,391,965,696/718,890,638,270.44
  6. Step 6: Final answer
    x = 549,404,202,834.06

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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.