Home / 718,890,638,258.30-992,100,265,754.35-398,106,473,366.16

Finding the Fourth Proportional to 718,890,638,258.30, 992,100,265,754.35 and 398,106,473,366.16

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Solution

The fourth proportional to 718,890,638,258.30, 992,100,265,754.35 and 398,106,473,366.16 is: 549,404,202,817.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,890,638,258.30 : 992,100,265,754.35 = 398,106,473,366.16 : x
  2. Step 2: Convert to fraction form
    718,890,638,258.30/992,100,265,754.35 = 398,106,473,366.16/x
  3. Step 3: Cross multiply
    718,890,638,258.30x = 992,100,265,754.35 × 398,106,473,366.16
  4. Step 4: Simplify right side
    718,890,638,258.30x = 394,961,538,025,094,389,956,608
  5. Step 5: Solve for x
    x = 394,961,538,025,094,389,956,608/718,890,638,258.30
  6. Step 6: Final answer
    x = 549,404,202,817.26

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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.