Home / 643,587,915.20-965,885,757.60-298,584,291.20

Finding the Fourth Proportional to 643,587,915.20, 965,885,757.60 and 298,584,291.20

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Solution

The fourth proportional to 643,587,915.20, 965,885,757.60 and 298,584,291.20 is: 448,110,207.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,587,915.20 : 965,885,757.60 = 298,584,291.20 : x
  2. Step 2: Convert to fraction form
    643,587,915.20/965,885,757.60 = 298,584,291.20/x
  3. Step 3: Cross multiply
    643,587,915.20x = 965,885,757.60 × 298,584,291.20
  4. Step 4: Simplify right side
    643,587,915.20x = 288,398,314,313,171,008
  5. Step 5: Solve for x
    x = 288,398,314,313,171,008/643,587,915.20
  6. Step 6: Final answer
    x = 448,110,207.64

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.