Home / 718,890,638,222.25-992,100,265,704.61-398,106,473,330.20

Finding the Fourth Proportional to 718,890,638,222.25, 992,100,265,704.61 and 398,106,473,330.20

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Solution

The fourth proportional to 718,890,638,222.25, 992,100,265,704.61 and 398,106,473,330.20 is: 549,404,202,767.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,890,638,222.25 : 992,100,265,704.61 = 398,106,473,330.20 : x
  2. Step 2: Convert to fraction form
    718,890,638,222.25/992,100,265,704.61 = 398,106,473,330.20/x
  3. Step 3: Cross multiply
    718,890,638,222.25x = 992,100,265,704.61 × 398,106,473,330.20
  4. Step 4: Simplify right side
    718,890,638,222.25x = 394,961,537,969,616,632,938,496
  5. Step 5: Solve for x
    x = 394,961,537,969,616,632,938,496/718,890,638,222.25
  6. Step 6: Final answer
    x = 549,404,202,767.64

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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.