Home / 644,808.40-967,366.20-312,110.80

Finding the Fourth Proportional to 644,808.40, 967,366.20 and 312,110.80

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Solution

The fourth proportional to 644,808.40, 967,366.20 and 312,110.80 is: 468,240.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,808.40 : 967,366.20 = 312,110.80 : x
  2. Step 2: Convert to fraction form
    644,808.40/967,366.20 = 312,110.80/x
  3. Step 3: Cross multiply
    644,808.40x = 967,366.20 × 312,110.80
  4. Step 4: Simplify right side
    644,808.40x = 301,925,438,574.96
  5. Step 5: Solve for x
    x = 301,925,438,574.96/644,808.40
  6. Step 6: Final answer
    x = 468,240.55

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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.