Home / 718,890,638,342.20-992,100,265,870.14-398,106,473,450.20

Finding the Fourth Proportional to 718,890,638,342.20, 992,100,265,870.14 and 398,106,473,450.20

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Solution

The fourth proportional to 718,890,638,342.20, 992,100,265,870.14 and 398,106,473,450.20 is: 549,404,202,933.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,890,638,342.20 : 992,100,265,870.14 = 398,106,473,450.20 : x
  2. Step 2: Convert to fraction form
    718,890,638,342.20/992,100,265,870.14 = 398,106,473,450.20/x
  3. Step 3: Cross multiply
    718,890,638,342.20x = 992,100,265,870.14 × 398,106,473,450.20
  4. Step 4: Simplify right side
    718,890,638,342.20x = 394,961,538,154,567,252,836,352
  5. Step 5: Solve for x
    x = 394,961,538,154,567,252,836,352/718,890,638,342.20
  6. Step 6: Final answer
    x = 549,404,202,933.24

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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.