Home / 644,040.80-966,061.20-329,112.80

Finding the Fourth Proportional to 644,040.80, 966,061.20 and 329,112.80

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Solution

The fourth proportional to 644,040.80, 966,061.20 and 329,112.80 is: 493,669.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,040.80 : 966,061.20 = 329,112.80 : x
  2. Step 2: Convert to fraction form
    644,040.80/966,061.20 = 329,112.80/x
  3. Step 3: Cross multiply
    644,040.80x = 966,061.20 × 329,112.80
  4. Step 4: Simplify right side
    644,040.80x = 317,943,106,503.36
  5. Step 5: Solve for x
    x = 317,943,106,503.36/644,040.80
  6. Step 6: Final answer
    x = 493,669.20

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Similar ratio
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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.