Home / 812,148.21-1,120,750.92-449,564.31

Finding the Fourth Proportional to 812,148.21, 1,120,750.92 and 449,564.31

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Solution

The fourth proportional to 812,148.21, 1,120,750.92 and 449,564.31 is: 620,391.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,148.21 : 1,120,750.92 = 449,564.31 : x
  2. Step 2: Convert to fraction form
    812,148.21/1,120,750.92 = 449,564.31/x
  3. Step 3: Cross multiply
    812,148.21x = 1,120,750.92 × 449,564.31
  4. Step 4: Simplify right side
    812,148.21x = 503,849,614,031.67
  5. Step 5: Solve for x
    x = 503,849,614,031.67/812,148.21
  6. Step 6: Final answer
    x = 620,391.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.