Home / 687,633.42-1,031,457.21-207,865.15

Finding the Fourth Proportional to 687,633.42, 1,031,457.21 and 207,865.15

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Solution

The fourth proportional to 687,633.42, 1,031,457.21 and 207,865.15 is: 311,799.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,633.42 : 1,031,457.21 = 207,865.15 : x
  2. Step 2: Convert to fraction form
    687,633.42/1,031,457.21 = 207,865.15/x
  3. Step 3: Cross multiply
    687,633.42x = 1,031,457.21 × 207,865.15
  4. Step 4: Simplify right side
    687,633.42x = 214,404,007,675.23
  5. Step 5: Solve for x
    x = 214,404,007,675.23/687,633.42
  6. Step 6: Final answer
    x = 311,799.87

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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.