Home / 718,890,638,234.28-992,100,265,721.25-398,106,473,342.28

Finding the Fourth Proportional to 718,890,638,234.28, 992,100,265,721.25 and 398,106,473,342.28

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Solution

The fourth proportional to 718,890,638,234.28, 992,100,265,721.25 and 398,106,473,342.28 is: 549,404,202,784.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,890,638,234.28 : 992,100,265,721.25 = 398,106,473,342.28 : x
  2. Step 2: Convert to fraction form
    718,890,638,234.28/992,100,265,721.25 = 398,106,473,342.28/x
  3. Step 3: Cross multiply
    718,890,638,234.28x = 992,100,265,721.25 × 398,106,473,342.28
  4. Step 4: Simplify right side
    718,890,638,234.28x = 394,961,537,988,225,719,599,104
  5. Step 5: Solve for x
    x = 394,961,537,988,225,719,599,104/718,890,638,234.28
  6. Step 6: Final answer
    x = 549,404,202,784.33

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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.