Home / 687,903,364.56-1,031,777,774.40-189,984,664.68

Finding the Fourth Proportional to 687,903,364.56, 1,031,777,774.40 and 189,984,664.68

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Solution

The fourth proportional to 687,903,364.56, 1,031,777,774.40 and 189,984,664.68 is: 284,955,655.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,903,364.56 : 1,031,777,774.40 = 189,984,664.68 : x
  2. Step 2: Convert to fraction form
    687,903,364.56/1,031,777,774.40 = 189,984,664.68/x
  3. Step 3: Cross multiply
    687,903,364.56x = 1,031,777,774.40 × 189,984,664.68
  4. Step 4: Simplify right side
    687,903,364.56x = 196,021,954,493,660,704
  5. Step 5: Solve for x
    x = 196,021,954,493,660,704/687,903,364.56
  6. Step 6: Final answer
    x = 284,955,655.97

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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.