Home / 643,587,903.20-965,885,739.60-298,584,279.20

Finding the Fourth Proportional to 643,587,903.20, 965,885,739.60 and 298,584,279.20

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Solution

The fourth proportional to 643,587,903.20, 965,885,739.60 and 298,584,279.20 is: 448,110,189.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,587,903.20 : 965,885,739.60 = 298,584,279.20 : x
  2. Step 2: Convert to fraction form
    643,587,903.20/965,885,739.60 = 298,584,279.20/x
  3. Step 3: Cross multiply
    643,587,903.20x = 965,885,739.60 × 298,584,279.20
  4. Step 4: Simplify right side
    643,587,903.20x = 288,398,297,348,024,896
  5. Step 5: Solve for x
    x = 288,398,297,348,024,896/643,587,903.20
  6. Step 6: Final answer
    x = 448,110,189.63

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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.