Home / 1,171,491,878.20-1,616,683,489.98-642,851,240.20

Finding the Fourth Proportional to 1,171,491,878.20, 1,616,683,489.98 and 642,851,240.20

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Solution

The fourth proportional to 1,171,491,878.20, 1,616,683,489.98 and 642,851,240.20 is: 887,148,264.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,171,491,878.20 : 1,616,683,489.98 = 642,851,240.20 : x
  2. Step 2: Convert to fraction form
    1,171,491,878.20/1,616,683,489.98 = 642,851,240.20/x
  3. Step 3: Cross multiply
    1,171,491,878.20x = 1,616,683,489.98 × 642,851,240.20
  4. Step 4: Simplify right side
    1,171,491,878.20x = 1,039,286,986,544,507,392
  5. Step 5: Solve for x
    x = 1,039,286,986,544,507,392/1,171,491,878.20
  6. Step 6: Final answer
    x = 887,148,264.43

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Double scale
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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.