Home / 718,890,638,324.64-992,100,265,845.88-398,106,473,432.48

Finding the Fourth Proportional to 718,890,638,324.64, 992,100,265,845.88 and 398,106,473,432.48

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Solution

The fourth proportional to 718,890,638,324.64, 992,100,265,845.88 and 398,106,473,432.48 is: 549,404,202,908.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,890,638,324.64 : 992,100,265,845.88 = 398,106,473,432.48 : x
  2. Step 2: Convert to fraction form
    718,890,638,324.64/992,100,265,845.88 = 398,106,473,432.48/x
  3. Step 3: Cross multiply
    718,890,638,324.64x = 992,100,265,845.88 × 398,106,473,432.48
  4. Step 4: Simplify right side
    718,890,638,324.64x = 394,961,538,127,329,174,224,896
  5. Step 5: Solve for x
    x = 394,961,538,127,329,174,224,896/718,890,638,324.64
  6. Step 6: Final answer
    x = 549,404,202,908.78

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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.