Home / 856,377,003.40-1,284,565,505.10-812,161,112.20

Finding the Fourth Proportional to 856,377,003.40, 1,284,565,505.10 and 812,161,112.20

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Solution

The fourth proportional to 856,377,003.40, 1,284,565,505.10 and 812,161,112.20 is: 1,218,241,668.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    856,377,003.40 : 1,284,565,505.10 = 812,161,112.20 : x
  2. Step 2: Convert to fraction form
    856,377,003.40/1,284,565,505.10 = 812,161,112.20/x
  3. Step 3: Cross multiply
    856,377,003.40x = 1,284,565,505.10 × 812,161,112.20
  4. Step 4: Simplify right side
    856,377,003.40x = 1,043,274,149,315,770,752
  5. Step 5: Solve for x
    x = 1,043,274,149,315,770,752/856,377,003.40
  6. Step 6: Final answer
    x = 1,218,241,668.30

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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.