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Finding the Fourth Proportional to 654,609.40, 982,400.82 and 486,521.08

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Solution

The fourth proportional to 654,609.40, 982,400.82 and 486,521.08 is: 730,143.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    654,609.40 : 982,400.82 = 486,521.08 : x
  2. Step 2: Convert to fraction form
    654,609.40/982,400.82 = 486,521.08/x
  3. Step 3: Cross multiply
    654,609.40x = 982,400.82 × 486,521.08
  4. Step 4: Simplify right side
    654,609.40x = 477,958,707,939.29
  5. Step 5: Solve for x
    x = 477,958,707,939.29/654,609.40
  6. Step 6: Final answer
    x = 730,143.36

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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.