Home / 687,609.03-1,031,624.70-328,238.46

Finding the Fourth Proportional to 687,609.03, 1,031,624.70 and 328,238.46

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Solution

The fourth proportional to 687,609.03, 1,031,624.70 and 328,238.46 is: 492,458.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,609.03 : 1,031,624.70 = 328,238.46 : x
  2. Step 2: Convert to fraction form
    687,609.03/1,031,624.70 = 328,238.46/x
  3. Step 3: Cross multiply
    687,609.03x = 1,031,624.70 × 328,238.46
  4. Step 4: Simplify right side
    687,609.03x = 338,618,902,825.96
  5. Step 5: Solve for x
    x = 338,618,902,825.96/687,609.03
  6. Step 6: Final answer
    x = 492,458.49

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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.