Home / 815,998,660.30-1,223,878,416.22-401,364,184.87

Finding the Fourth Proportional to 815,998,660.30, 1,223,878,416.22 and 401,364,184.87

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Solution

The fourth proportional to 815,998,660.30, 1,223,878,416.22 and 401,364,184.87 is: 601,987,462.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,998,660.30 : 1,223,878,416.22 = 401,364,184.87 : x
  2. Step 2: Convert to fraction form
    815,998,660.30/1,223,878,416.22 = 401,364,184.87/x
  3. Step 3: Cross multiply
    815,998,660.30x = 1,223,878,416.22 × 401,364,184.87
  4. Step 4: Simplify right side
    815,998,660.30x = 491,220,962,906,126,912
  5. Step 5: Solve for x
    x = 491,220,962,906,126,912/815,998,660.30
  6. Step 6: Final answer
    x = 601,987,462.49

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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.