Home / 718,890,638,344.18-992,100,265,872.88-398,106,473,452.18

Finding the Fourth Proportional to 718,890,638,344.18, 992,100,265,872.88 and 398,106,473,452.18

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Solution

The fourth proportional to 718,890,638,344.18, 992,100,265,872.88 and 398,106,473,452.18 is: 549,404,202,935.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,890,638,344.18 : 992,100,265,872.88 = 398,106,473,452.18 : x
  2. Step 2: Convert to fraction form
    718,890,638,344.18/992,100,265,872.88 = 398,106,473,452.18/x
  3. Step 3: Cross multiply
    718,890,638,344.18x = 992,100,265,872.88 × 398,106,473,452.18
  4. Step 4: Simplify right side
    718,890,638,344.18x = 394,961,538,157,622,383,869,952
  5. Step 5: Solve for x
    x = 394,961,538,157,622,383,869,952/718,890,638,344.18
  6. Step 6: Final answer
    x = 549,404,202,935.98

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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.